26-year old Craig Stammen made his major league debut last year, and started 19 games. He is in his 4th professional season and in his own words, started to "pitch instead of throw" in 2008. He doesn't strike anyone out (4.4 K/9), but also doesn't walk anyone either ( < 2 W/9). He is a ground-ball machine(> 65% the past two years), and his greatest comp is teammate Chien-Ming Wang. He had a 5.11 ERA last year, with a 1.29 WHIP. He faced the Mets three times last year, with a 1-2 record, with 17 innings pitched and a 4.67 ERA, 1.33 WHIP.
His repertoire features a 90 mph fastball, 85 mph slider, along with a curve-ball (79 mph) and change-up (84 mph). He is also throwing his fastball less this year (53% vs 70% last year), and increased the usage of his slider (26% vs 2%).
He has made six starts this year and has a 1-1 record, with a 5.63 ERA and 1.31 WHIP. He's only pitched more than five innings in three of those starts.