The Chicagoland native is a graduate of Morton High School in Berwyn, Ill... Attended St. Xavier University on Chicago's far south side...as a senior (2006) was the team's closer and compiled nine saves and a 3-1 record with an 0.68 ERA...was also the team's starting right fielder, hitting .330 (72x218) in 58 games with a team-leading 49 RBI and 12 stolen bases...earned both Chicagoland Collegiate Athletic Conference (CCAC) and NAIA Region VII Player of the Year honors... Selected by the Cardinals in the 28th round of the June 2006 draft...signed by Cardinals scout Scott Melvin... Pitched for Team USA in the 2013 World Baseball Classic…did not allow a run in two outings (2.0 IP, 2 SO)... In February 2014, was inducted into the SXU Athletics Hall of Fame along with his former head coach Mike Dooley...the pair helped lead the Cougars to the 2006 NAIA World Series, the program's first appearance since 1988... Signed by Houston to a three-year contract on Dec. 12, 2014...the deal keeps him in Houston through the 2017 season.
Was once again one of the most effective relievers in the AL in what was his second season with the Astros...led the Majors in swing-and-miss percentage, as 42.6% of all swings against him were whiffs (min. 200 batters faced)...was the second-highest mark by an Astros pitcher since 1988, behind a 48.1% mark set by RHP Brad Lidge in 2004...among AL relievers, ranked fifth in opponent batting average (.183, 38x208)...was the second-lowest mark of his career behind a .170 opponent average (47x276) he posted in 2010...ranked sixth among AL pitchers in opponent batting average against right-handed hitters (.156, 17x109, min. 100 batters faced)...also ranked eighth all-time in club history for a single season (min. 100 batters faced)...was the lowest mark produced by an Astro since RHP Jose Valverde put up a .144 opponent average vs. righties in 2009... struck out 67 batters, his most since 2012 (72)...also posted a 29.1% strikeout rate and 10.46 strikeouts per 9.0 innings ratio, which were both his highest marks since 2010 (30% and 10.23)...ranked 10th among AL relievers with a career-high 61.4% groundball rate...posted a 0.97 WHIP, marking his second-consecutive season with a WHIP under 1.00...was one of six AL relievers to post a WHIP under 1.00 in the 2015 and 2016 seasons, joining LHP Zach Britton, RHP Koji Uehara, RHP Roberto Osuna, LHP Andrew Miller and RHP Nate Jones...was placed on the family medical emergency list on June 14...reinstated from the family medical emergency list on June 17... placed on the 15-day Disabled List on Aug. 2 (retroactive to July 28) with a left oblique strain...was activated from the DL on Aug. 12...earned the save on Opening Day (April 4 at NYY), becoming the third pitcher in club history with two career saves on Opening Day...also LHP Billy Wagner (3) and RHP Dave Smith (2)...had a streak in which he converted 16 consecutive saves from Aug. 12, 2015-May 6, 2016...was the longest consecutive saves streak by an Astro since RHP Brandon Lyon saved 16 straight in 2010...picked up the win in three consecutive outings from June 23-27...became the seventh pitcher in club history to record a win in three consecutive relief outings, and the first since RHP Doug Henry in 1998...recorded a strikeout in a career-long 17 consecutive games from June 4-July 19...fanned 25 batters in 16.1 innings (13.78 SO/9) in that span...was the longest streak by an Astros reliever since RHP Jerome Williams had a 17-game streak in 2014.
Joined the Astros in the oﬀseason as a free agent and was immediately installed as the club's closer...in what was his ﬁrst season as a closer, successfully converted 31 of his 36 save opportunities(86.1%), posting a 7-3 record with a 3.10 ERA (21ER/61IP), 59 strikeouts and 10 walks in 64 appearances...ﬁnished 10th in the AL in saves...ranked tied for second among AL relievers in wins behind only RHP WadeDavis (8)...recorded the most saves by an Astros reliever since RHP Jose Valverde saved 44 games in 2009...became the second pitcher in club history to record seven wins and 31 saves in a single season, joiningRHP Doug Jones, who won 11 games and saved 36 in 1992...marked his seventh consecutive season with atleast 60 appearances...also marked the seventh consecutive season he posted an ERA below 3.25...set twoclub records, as the Astros won each of the ﬁrst 21 games in which he appeared...marked the longest startof season streak in club history (previously RHP Donne Wall: 10 games in 1996)...also marked the longeststreak by a player to begin his career with the Astros, surpassing RHP Roger Clemens (7g in 2004) and RHPPeter Munro (7g in 2002)...held right-handed hitters to a .189 (20x106) batting average...the only Astrosreliever since 1974 to hold righties to a lower batting average for a single season (min. 70 BF) was LHPTony Sipp in 2014 (.176, 16x91)...ranked sixth among AL relievers and set a new career high in groundballpercentage (61%)...marked the ﬁfth-highest groundball percentage produced by an Astros reliever sincethe stat was ﬁrst tracked in 1987, and the highest since RHP Enerio Del Rosario in 2011 (61.9%)...made hisseventh consecutive Opening Day roster...placed on the Family Medical Emergency List from May 9-12and was inactive for three games...missed three games from Sept. 16-18 for the birth of his son...becamethe 11th pitcher in club history to record a save on Opening Day, as he closed out Houston's 2-0 victoryagainst the Indians at Minute Maid Park on April 6...prior to Gregerson, the last to do it was LHP Erik Bedardon March 31, 2013 vs. TEX...began his season with seven consecutive scoreless outings (April 6-20)...theonly other closer to begin his career with the Astros with a scoreless streak of at least seven games wasRHP Doug Jones in 1992...allowed a home run to Logan Morrison on May 1 vs. SEA, which was the ﬁrsthomer he allowed to a left-handed hitter since Sept. 3, 2012 at LAD (OF Andre Ethier)...had gone 169 gameswithout allowing a homer to a lefty...recorded his 12th save of the season on May 26 at BAL...tied a clubrecord by recording 12 saves within the Astros ﬁrst 46 games of a season...this has been done six times infranchise history, most recently by RHP Brett Myers in 2012...recorded nine saves in May, which ranked tiedfor third in the AL and tied for third in club history with RHP Fred Gladding (1969)...the only two pitchersto compile more saves in a single May were LHP Billy Wagner (11 in 2003) and RHP Jose Valverde (10 in2008)...his longest scoreless outing of the season was a 13-game stretch from June 13-July 24 in whichhe went 1-0 with six saves and held opponents to a .119 average (5x42) and .262 OPS...was his longestscoreless streak since a 15-game run from June 27-Aug. 8, 2014 while with Oakland...recorded his longestouting of the season with 2.0 scoreless innings on Aug. 18 vs. TB...was his longest outing since June 6,2014 at BAL (2IP)...was scoreless in 34 of his last 39 games of the year, going 5-2 with 16 saves, a 2.19 ERA(11ER/37IP) and 32 strikeouts...pitched in four postseason games, recording three saves while posting a2.25 ERA (1ER/4IP) and six strikeouts...became the ﬁrst pitcher in club history to record a save in each of hisﬁrst three postseason appearances with the club...recorded the save in the AL Wild Card Game at NYY witha perfect 9th inning, and recorded the save in Games 1 and 3 of the ALDS against the Royals...recorded afour-out save in Game 3 of the ALDS vs. KC, his ﬁrst four-out save since Sept. 11, 2012 vs. STL while with SanDiego...joined RHP Brad Lidge (NLCS Games 2, 3, 4) as the only pitchers in club history to record a save inthe postseason by throwing more than one inning...signed a three-year deal with Houston as a free agent on Dec. 12, 2014.
Compiled a career-low 2.12 ERA in 72 relief appearances in his first season with the A's…the games pitched tied for the team lead and tied for 10th in the American League…it marked the fifth time in his career he pitched in at least 70 games…had appeared in at least 60 games in each of his six seasons in the Majors…became one of five Major Leaguers to pitch in at least 60 games in each of the last six seasons (2009-14) (Breslow, Papelbon, Thornton, Ziegler) and his 435 games pitched over that span are the most in the majors…walked 15 batters in 72.1 innings for a career-low 1.87 walks per nine innings…allowed a .220 opponents' batting average, which included .219 (33x151) against right-handed hitters compared to .221 (25x113) against left-handed hitters…surrendered all six of his home runs in 2014 to righties for a .397 slugging percentage…had a .265 slugging percentage against lefties…had not allowed a home run to a lefty since Sept. 3, 2012, at LAD (OF Andre Ethier)…yielded a .173 batting average with runners in scoring position…the opponents' clean-up hitter was 5x42 (.119) with one extra base hit off him (home run)…had a 2.88 ERA and .242 opponents batting average over his first 25 appearances, a 0.91 ERA and .176 opponents average over his next 29 outings from May 27- Aug. 8, and a 3.06 ERA and .254 opponents' average over his final 18 games beginning Aug. 10…had a 0.87 ERA in 23 appearances on no days rest, a 2.61 ERA in his other 49 games…compiled a 1.81 ERA in 46 games at night compared to 2.78 in 26 appearances during the day…had a career-high six wild pitches, which tied for fifth most among AL relievers…averaged 13.9 pitches per inning, which ranked fourth lowest among AL relievers…tossed at least one inning in 63 of his 72 appearances.
Went 6-8 with four saves and a 2.71 ERA in a team-leading 73 games in his fifth and final season with San Diego…topped 70 games for the fourth time in the last five years and has appeared in at least 61 games in each of his five seasons…had career highs in wins, losses and hit batters (4)…tied for first among National League relievers in losses (8), tied for third in triples (3) and tied for sixth in wins (6)and hit batters (4)…allowed a .203 opponents batting average, including .192 (24-for-125) against righthanded hitters compared to .216 (25-for-116) against left-handers…has a .191 (137-for-718) average against right-handers in his career…surrendered all three of his home runs in 2013 to righties … issued 12 of his 18 walks to lefties…was 4-2 with a 0.91 ERA and .140 opponents batting average over his first 29 games through June 8, 1-5 with a 7.71 ERA and .329 opponents average over a 25-game stretch from June 9 to August 15, and 1-1 with a 0.50 ERA and .136 opponents average over his final 19 contests … first batters faced were 13-for-70 (.186) with just three walks and his .219 on-base percentage against first batters ranked seventh in the NL…tied for ninth in first batter strikeouts (20) … allowed 5-of-19 (26.3%) inherited runners to score…was charged with five blown saves, which tied for seventh in the NL…did not induce a grounded into double play and his 66.1 innings pitched were the most in the majors among pitchers with no GIDP…they were also the most in San Diego history … opponents hit .161 with the bases empty and .265 with runners on base, including .290 with runners in scoring position…did not allow a run in three appearances against Cincinnati (2.2 ip) and has not allowed a run in 15 career outings against the Reds (18.0 ip)…compiled a 4.12 ERA in 44 outings on zero or one days rest … had a 0.67 ERA in 29 outings on two days rest or more…posted a 2.03 ERA and .179 opponents batting average in 51 games at night compared to a 4.58 ERA and .265 opponents average in 22 day games…logged a 0.71 ERA in 14 games against NL Central competition … opponents were 10-for-10 in stolen base attempts and they are 28-for-30 (93.3%) off him in his career … tossed at least one inning in 54 of his 73 appearances…had just two outings longer than 1.1 innings.
SAN DIEGO: Struck out a season-high three batters April 4 at New York (NL)…tossed 15.1 consecutive scoreless innings over a 16-game stretch from April 24 to May 31…held the opposition to a .061 batting average over that span…tossed a season-high 2.0 scoreless innings May 31 against Toronto…did not allow a run in 12 games (11.1 innings) in May and opponents hit .081 … his season ERA stood at 0.76 at the end of May but he posted a 6.55 ERA in 14 appearances in June … however, logged three of his four saves over a seven-game stretch from June 1 to 11…matched his season high with 2.0 scoreless innings and three strikeouts June 6 at Colorado … allowed a season-high three runs on a career-high tying four hits in 0.2 innings June 9 at Colorado … matched his high in hits June 19 at San Francisco…allowed a pinch hit walk-off home run to Jonny Gomes in the bottom of the ninth inning July 3 at Boston…that was his third and final home run of the season…finished the season with a 34-game, 30.2-inning, 124-batters faced homerless streak …walked two batters Aug. 15 against New York (NL), his only outing with more than one walk…allowed two runs in that game but would not allow an earned run in 18 of his final 19 appearances … compiled a 0.69 ERA in 14 appearances in September.