Mengden will start Sunday's game against Pittsburgh, Joe Stiglich of CSN California reports.
Rich Hill will come off the disabled list to take the mound on Saturday, which pushes back Mengden's start to Sunday. Mengden has posted a 2.81 ERA with a 1.17 WHIP during 25.2 innings of work this year, including a gem during his last outing Monday (two runs on four hits over 7.2 innings, and had a shutout through seven). The 23-year-old has accumulated an impressive K:BB of 26:9 and will make his fifth career start Sunday.