Ole Miss product Bobby Wahl made his big league debut Wednesday night. He is no doubt anxiously awaiting his second opportunity. Mississippi State alum Kendall Graveman suffered his worst start of the season for Oakland and Wahl offered little relief in a 7-4 loss to Minnesota. Graveman gave up six runs in 3 1/3 innings, yielding four walks and five hits, including Kennys Vargas’ three-run homer. Wahl, recalled from Triple-A Nashville earlier in the day, came on in the sixth inning and lasted just four batters. He hit one (ex-Southern Miss star Brian Dozier) and allowed two hits and a run. Wahl, a fifth-round pick in 2013, had a 1.93 ERA and three saves this season at Nashville. Rated the A’s No. 26 prospect by MLB Pipeline, the right-hander was added to the 40-man roster over the winter. Over 116 games in the minors – working mostly in relief – Wahl, 25, has a 3.79 ERA, 27 saves in 31 chances and 205 strikeouts in 171 innings. His fastball has touched 100 mph. P.S. Former Ole Miss standout Drew Pomeranz seems to be putting to rest any concerns about his left arm. He improved to 3-1 with a 4.00 ERA by throwing 5 1/3 strong innings on Wednesday in Boston’s 4-2 win vs. Baltimore, yet another controversy-filled game in their series. Pomeranz has made three of his five 2017 starts against the Orioles, beating them twice.