The Tigers were shut down by South Alabama starter Randy Bell, who allowed just four hits in a complete game.
Grier leads the SEC in hits with 67 and total bases with 102, and has hit eight home runs this year, well over his career total of two.
Camp earned the honor after throwing the first complete game for an Auburn pitcher since 2014 in the Tigers' 2-0 win over Tennessee.
Auburn committed five errors which led to five unearned runs for the Volunteers.
Auburn got to within one run in the ninth inning but couldn't close the gap completely as the Tigers dropped another SEC series.
Auburn dropped the series vs. LSU despite jumping out to an early lead.
The Auburn Tigers defeated No. 14 LSU in Game One of a doubleheader, 8-5, and dropped Game Two, 8-6, Saturday at Plainsman Park.
Blake Logan broke the game open with a 3-run home run in the first inning, and Grier tacked on his SEC-leading seventh homer of the year in the fourth inning to salt the game away for the Tigers.
Freshman Casey Mize pitched seven strong innings and allowed only one run in Auburn's 10-1 victory over Oral Roberts on Saturday at Plainsman Park.
Right-hander Cole Lipscomb threw 6.2 innings and allowed just two earned runs, but Auburn fell for the third game in a row.
Daniel Sprinkle (28) throws a pitch against South Alabama on Tuesday, April 26, at Plainsman Park in Auburn, Ala.
