Due to Jason Hammel’s injury, the Orioles’ new ace is lefty Wei-Yin Chen. Chen has pitched well for the Orioles so far this year as he has started 18 games in which he is 7-5 with a 3.80 ERA and a 1.24 WHIP. Behind him the Orioles have 28-year old Miguel Gonzalez. Gonzalez has pitched in 5 games (2 starts) so far this year and he is 1-1 with a 2.59 ERA and a 1.27 WHIP. This is his first taste of the majors. 24-year old Chris Tillman is also currently in the rotation. He started 1 game so far this year for the O’s and he was the winning pitcher, working 8 1/3 innings allowing 2 hits, 2 runs (both unearned), with 2 walks while whiffing 7 batters. He was very impressive in his first start. But, he has pitched in 37 games (all starts) in his first four years with the Orioles and he is 8-15 with a 5.33 ERA and a 1.53 WHIP. The Orioles now have to choose two more starting pitchers out of the minors. Lefty Zach Britton should get one of the jobs as he is looking good in the minors. The other spot will likely to to Jake Arrieta, Brian Matusz or Tommy Hunter. All of those guys have failed with the Orioles earlier this year. Arrieta has the best stuff, but it hasn’t translated into success at the major league level. He has pitched in 18 games (all starts) for the Orioles so far this year and he is 3-9 with a 6.13 ERA and a 1.41 WHIP. Lefty Brian Matusz has also been awful this year for the Orioles. He has pitched in 16 games (all starts) for the Orioles so far this year and he is 5-10 with a 5.42 ERA and a 1.71 WHIP. Righty Tommy Hunter also has failed so far this year. He has pitched in 15 games (13 starts) for the Orioles this year and he is 3-4 with a 6.11 ERA and a 1.44 WHIP. The #1 need for the Orioles at the trade deadline is starting pitching. They would be smart to make a deal as soon as possible if they are serious about making the playoffs this year.