The club has also placed starter C.J. Wilson (right ankle sprain) on the DL and optioned fellow right-hander Cam Bedrosian to Double-A. Meanwhile, the Angels have added righties Drew Rucinski and Cory Rasmus to the active roster.
Maronde, 24, has tossed 6 1/3 innings for the Halos this year, allowing nine earned runs and twelve hits while issuing seven free passes against seven strikeouts. He has also been hit hard in his 18 Triple-A innings on the year, walking 34 batters in the process.