Hamels, 31, joins the Rangers after having spent his entire career in the Phillies organization since being selected in the first round of the 2002 June draft. In his career, he has been a 3-time All-Star (2007, 2011, 2012), posted 200-or-more innings 6 times, had 6 different 10-win seasons, and was selected most valuable player of both the 2008 National League Championship Series and 2008 World Series. He has a 114-90 record and 3.30 ERA over 295 games/294 starts in his major league career. His 1844 career strikeouts are the 3rd-most of any active pitcher since the start of 2006, trailing only Felix Hernandez (2005) and Justin Verlander (1858). The 114 wins since the beginning of 2006 are tied with Tim Hudson for 2nd-most in the National League by any active pitcher in that span, trailing only Adam Wainwright (121).
Hamels pitched his first career no-hitter in his most recent start on Saturday against the Cubs at Wrigley Field. He will be the first pitcher in major league history to throw a no-hitter in his last start before a midseason trade. His hitless effort was the first against the Cubs since Sandy Koufax on September 9, 1965, and the first at Wrigley Field since the Cubs' Milt Pappas on September 2, 1972.
Hamels has gone 6-7 with a 3.64 ERA (52 ER/128.2 IP) in 20 games/starts for the Phillies this season, holding opponents to a .233 (113-486) average with 39 walks and 137 strikeouts. He ranks among National League leaders in strikeouts (T6th) and strikeouts per 9 innings (7th, 9.6), and has received the 5th-lowest run support average (2.87 per 9 innings) in the majors in 2015. His only career start against the Rangers came on June 28, 2008 in Arlington, earning the win in the Phillies' 8-6 victory (7.0 IP, 6 H, 4 R-ER).
The 28-year-old Diekman (#41) has gone 2-1 with a 5.15 ERA (21 ER/36.2 IP) in 41 appearances for the Phillies this season, posting 49 strikeouts against 24 walks. The lefty has a career 3.84 ERA over 191 relief outings in his major league career, all with Philadelphia from 2012-15. Deikman has averaged 11.7 strikeouts per 9 innings and just 0.5 home runs per 9 innings in his big league career. His career-high 100 strikeouts in 2014 ranked 3rd among National League relievers behind Aroldis Chapman (106) and Kenley Jansen (101). Diekman has held left-handed batters to a .219 (56-256) average in his career, allowing just 2 home runs to lefties.
Harrison was activated from the disabled list on July 4 and has gone 1-2 with a 6.75 ERA (12 ER/16.0 IP) in 3 starts for the Rangers this season. He has been in the Texas organization since being acquired in a trade with Atlanta on July 31, 2007. Alfaro batted .253 (48-190) with 5 home runs and 21 RBI in 49 games with Double-A Frisco before he was placed on the disabled list on June 11. Asher has combined to go 4-10 with a 4.43 ERA (53 ER/107.2 IP) over 20 starts with Frisco and Triple-A Round Rock. Eickhoff has split the season between Frisco and Round Rock, going 10-4 with a 4.11 ERA (51 ER/111.2 IP) over 20 games/19 starts. Thompson is 6-6 with a 4.72 ERA (46 ER/87.2 IP) over 17 starts for Frisco. Williams has batted .299 (113-378) with 13 home runs and 45 RBI in 97 games with Frisco.
With this trade, the Rangers now have 37 players on the club's major league roster.