Mosebach, 24, was the Phillies' lone selection (26th overall) in the first round. He spent last season with Double A Arkansas, going 9-12 with a 4.62 ERA in 29 starts. Mosebach led the Texas League in innings pitched (177.1) and starts.
Originally selected by the Angels in the ninth round of the 2005 draft, Mosebach pitched for Scottsdale in the Arizona Fall League this past November. For his career, he is 35-30 with a 4.18 ERA (276 ER, 594.1 IP) in 99 games (95 starts) with 181 walks and 348 strikeouts.
In the minor league phase of the draft, the Phillies selected second baseman Kyle Haines from San Francisco and outfielder Javis Diaz from San Diego.
Haines, 26, spent last season with Double A Connecticut, where he hit .261 with 43 RBI in 105 games. A 31st-round selection of the Giants in 2004, Haines is hitting .270 with five home runs and 120 RBI in 336 career games.
Diaz, 24, combined to hit .253 with four home runs, 37 RBI and 28 stolen bases in 107 games between Single A Lake Elsinore and Triple A Portland. Signed as an amateur free agent by the Padres on Aug. 7, 2002, Diaz is hitting .277 with 16 home runs, 155 RBI and 151 stolen bases in 479 career games.
Three players in the Phillies' minor league system were selected by other teams in the Triple A phase of the draft, catcher Richard Suomi by Kansas City and righthanders Brett Harker and Ronald Hill, both by Florida.