Well, it's one of the attractive matchups if you're not, say, a white-tailed deer.
The two pals have been pointing toward their opening day duel for months now, trash-talking their way through winter hunting trips and the joint purchase of more than 500 acres of hunting property in southwestern Illinois.
"Some of the best hunting land in the United States," Oswalt told me this spring.
Oswalt is from Weir, Mississippi; Peavy is a native of Mobile, Alabama. They live about two hours' drive-time apart.
Not only did they purchase the Illinois property over the winter, they also enjoyed a home-and-home series of hunting trips together.
Peavy and some of his friends traveled to Mississippi to hunt with Oswalt on the Houston pitcher's 3,000-acre property, and then Oswalt and some of his friends visited Peavy's hunting spread in Alabama.
Funny thing is, neither Oswalt (14-7 with a 3.18 last season) nor Peavy (19-6, 2.54) personally bagged anything on their joint hunting trips, according to the Houston pitcher. The group shot three deer on Oswalt's property and "two or three" on Peavy's property.
But that didn't stop the two buddies from carrying on with their running commentary on Monday's opener for the past several months.
"We've got a lot of bets going on," Oswalt told me, grinning, at the Astros' camp in Kissimmee, Fla., in February. "I can't say what we've got going on, but we've been talking a lot of trash on the phone."
When I saw Peavy in Peoria, Ariz., a few weeks later, last year's unanimous Cy Young winner wasn't spilling any beans regarding the side wagers, either.
"We're going to get after it on opening day," Peavy said. "And then we'll go to dinner when all is said and done."
Venison? He didn't say.