Williams Alexander Jerez (pronounced hair-EHZ)...Wife's name is Tiffany Perez..Has one daughter; Brittany (10/27/15)... Attended Grand Street Campus (NY) High School, where he led New York City's Public School Athletic League with a .692 average, 36 hits, .758 on-base percentage and 1.385 slugging percentage in 2011.
Went a combined 1-0 with a 4.35 ERA (10.1ip/5er) in 12 appearances between San Francisco and Pittsburgh...Began spring training with Los Angeles (AL) before being acquired by San Francisco on 3/26 in exchange for pitcher Chris Stratton...Began the season with Triple-A Sacramento...Earned first win while allowing one run on one hit in 2.0 innings on 4/12 at Salt Lake...Picked up first save on 4/20 vs. Salt Lake...Made Giants debut on 5/7 with 1.0 scoreless inning of work before being optioned back to Triple-A the next day...Was recalled a second time on 5/29, but did not appear in a game before being sent back to Sacramento on 5/30...Picked up first career win (2.0ip/1r) on 7/18 vs. New York (NL) after being recalled prior to the game...Was optioned back to Triple-A the next day before his final stint with the Giants from 8/6-15...Was designated for assignment on 9/10 and claimed off waivers by the Pirates on 9/13...Was scored upon in each of his first two appearances (2.0ip/3r) with Pittsburgh before making a combined four scoreless appearances (1.2ip) to end the season...Did not receive a plate appearance between the Giants and Pirates.
Began 2018 season with Pawtucket (Red Sox' AAA), where he ranked fifth in the International League with an average of 11.75 strikeouts per 9.0 innings at the time of his trade to the Angels...Was acquired by Los Angeles (AL) on 7/30/18...Tossed 2.0 scoreless innings while making his big league debut on 8/7/18 vs. Detroit...Tossed 7.0 scoreless innings in his first six appearances before being scored upon in his next five outings...Has never received a plate appearance in the big leagues.
Split the season between Double-A Portland and Triple-A Pawtucket...Named an Eastern League mid-season All-Star...Combined to go 2-2 with 4 saves, a 3.27 ERA (23 ER/63.1 IP), 57 SO, and 23 BB in 38 appearances. Limited opposing LHH to 0 HR and a .182/.264/.221 line (14-for-77, 2B, 3B, 8 BB, 23 SO). Tossed 2.0+ innings in 17 of his outings. Began the season in Portland and posted a 0.78 ERA (2 ER/23.0 IP) in his final 14 outings with the Sea Dogs. Promoted to Pawtucket on 8/1...Went 0-2 with a 3.75 ERA (5 ER/12.0 IP) in 9 appearances for the club. Following the season, posted a 3.18 ERA and a .167 opponent AVG in 10 appearances with Estrellas in the Dominican Winter League (5.2 IP, 3 H, 2 ER, 3 BB, 7 SO).
Spent the season with Double-A Portland...Named an Eastern League mid-season All-Star...Led the Sea Dogs with 40 appearances. Following the season, was designated for assignment on 12/8 and outrighted to Triple-A Pawtucket on 12/16.
Named Red Sox Minor League Pitcher of the Year in only his 2nd professional season as a pitcher...Combined with Single-A Greenville (14 G), High-A Salem (5 G), and Double-A Portland (22 G) to go 5-3 with 4 saves and a 2.54 ERA (25 ER/88.2 IP) in 41 appearances, all in relief. Had never pitched above Short-A prior to 2015. Fanned 86 batters in 88.2 IP...His 8.7 SO/9.IP led left-handed Red Sox farmhands (min. 40.0 IP). Combined to hold left-handed batters to a .237 AVG and .289 SLG (27-for-114, 6 2B, 11 BB, 32 SO). Allowed 7 ER in 15.1 IP (4.11 ERA) in his first 6 appearances with Greenville, but posted a 0.75 ERA (2 ER/24.0 IP) in his final 8 outings with the Drive. Transferred to Salem on 6/4...Allowed only 1 ER in 12.1 IP (0.73 ERA) with Salem before being transferred to Portland on 6/24. Named Red Sox Minor League Relief Pitcher of the Month for June, combining with the 3 clubs to go 1-0 with a 0.96 ERA in 8 appearances (18.2 IP, 17 H, 2 ER, 8 BB, 19 SO). Gave up 5 ER in 0.1 IP on 8/9 at Akron, but had a 2.45 ERA (10 ER/36.2 IP) in his other 21 appearances with Portland. 5 of his final 6 Double-A outings were scoreless (10.0 IP, R, 5 H, 3 BB, 12 SO)...Pitched 2.0 perfect innings on 8/20 at Altoona. Following the season, ranked by Baseball America as the Red Sox' 3rd-best left-handed pitching prospect, the club's No. 19 prospect overall.