Rose shot a 3-under-par 68 to stay atop the leaderboard for a second day. Wilson did him two better, firing a 5-under 66 to pull into the tie at Cog Hill in Illinois. They now are knotted at 11-under 131 after 36 holes.
Third place is held by Webb Simpson, who also shot a 68 to pull within two strokes of the leaders at minus-9. John Senden is in fifth place at 8-under 134 after carding a 66.
"You never quite know what to expect after playing so well in the first round," said Rose, who shot a 63 Thursday. "A couple spells in my round it went a little bit flat, but I managed to create some momentum, get a couple birdies around the turn and then had a pretty good finish with eagle at 15 and birdie at 16. So I'm happy with the day."
Also lingering near the top of the leaderboard are Robert Allenby (67) and Bill Haas (66), who share fifth place at 6-under; and Matt Kuchar (65), Geoff Ogilvy (68), David Toms (66), Brandt Snedeker (66) and Keegan Bradley (66), who are are one shot back at minus-5.
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