In two starts at Camden Yards, the right-hander is 2-0 with a 0.69 ERA. Opposing hitters are batting a measly .196 against him.
Hunter will try to keep up that pace on Sunday, when the Orioles square off against the A's at Camden Yards in the rubber match of the three-game series.
After two shaky road starts that saw him give up a combined 13 runs on 15 hits, Hunter shut down the Blue Jays on Tuesday in Baltimore for his second win of the season. He gave up just one run on three hits in six innings.
Though he wasn't completely sharp, tossing 103 pitches, he made the right pitches when he needed to.
"He's going to keep firing bullets," manager Buck Showalter said after that game. "It's not ever going to be lack of aggressive[ness] or getting in the fight or getting in the competition."
Hunter will be up against right-hander Bartolo Colon, who has been one of Oakland's most consistent starters thus far.
Colon has gone at least seven innings in four of his first five starts, including his outing against the White Sox on Monday. However, he gave up back-to-back homers to Chicago in the fourth inning and took the loss after the A's were unable to plate any runs.
Colon was once again a strike-throwing machine, rattling off 20 straight at one point. He tossed 89 pitches, 63 of which were strikes.
"Other than the two home runs, [the outing was] similar to what we've seen," manager Bob Melvin said after the game. "A lot of strikes. Not 38 in a row, but a lot of strikes. You give up two to that team, and certainly you're giving your team a chance to win."
Athletics: Hughes back in lineup
Third baseman Luke Hughes returned to action for Saturday's game against the Orioles after experiencing a fever and flu-like symptoms for the few days prior. He finished 1-for-4.
Hughes had been scheduled to start on Friday but pulled out of the lineup just before batting practice because he didn't feel well enough to play. However, after going back to the hotel to rest, he was much improved on Saturday.
"It knocked me down for a few days, but I'm feeling better," Hughes said on Saturday. "I'm still getting over it, but I'm definitely feeling better today. I had a fever of about 102 or something. I had a good sleep last night and kind of broke a sweat, which I think was a good thing."
Orioles: Robinson honored
In pregame festivities on Saturday, a bronze statue of Hall of Famer Frank Robinson was unveiled. The 25-minute ceremony started about two hours before the ballgame, with the small area packed with fans hoping to see both Robinson and the sculpture.
"Since this is going to be a lifetime thing, as far as the statue is concerned, it ranks right up there with the Hall of Fame," Robinson said. "It's a tremendous honor. I was very surprised how well it came out. I was really taken aback."
Ten of the Orioles' first 21 games have been decided by two runs or fewer. In those games, Baltimore has an 8-2 record.
Oakland is 8-0 this season when scoring first and 3-11 when its opponent scores first.