DURHAM, N.C. (AP)
Allen scored all 21 of his points in the first half, then injured a toe late in Duke's 93-58 rout of Appalachian State on Saturday.
Allen, who has been playing through a right foot injury suffered in last week's loss to No. 5 Kansas, appeared to tweak that foot or ankle when he went down while going for a rebound with about 12 minutes to play and Duke leading by 35. He stayed on the bench for the rest of the game.
Allen was not available for comment after the game because he was receiving treatment, team spokesman Cory Walton said.
''He just landed funny, and when that happens, it hurts,'' coach Mike Krzyzewski said. ''It really hurts. He looked fresher in that first half than he has the entire season, and hopefully we'll get there by Tuesday night'' when No. 24 Michigan State visits.
''That's frustrating, but you do what you need to do and we don't ask anybody to feel sorry for us, and nobody will,'' Krzyzewski said. ''It's just a fact of life. I don't want, `Poor me.' I'm not `Poor me.' I've got good guys. ... Totally the opposite (team) of what we thought we would have.''
Allen started shooting the ball better in his last game, hitting three 3s in a rout of William & Mary on Wednesday night, and he picked up right where he left off.
He led the way during an opening half in which Duke scored a season-best 55 points and used a 24-12 burst to push the lead into the 20s. Allen keyed the run with two of his four 3s, and Jackson capped it with a layup that made it 53-31.
Appalachian State: The Mountaineers could pull a few positives from their first visit to Cameron Indoor Stadium since 1987. They found ways to score on Duke, hitting nine 3s and scoring 34 first-half points - both the most allowed by Duke this season. That could give them a dose of confidence before their next visit to an ACC arena - they are at North Carolina State on Dec. 15.
''We knew that they were going to bring pressure offensively, their defense against our offense, and we played way too fast,'' coach Jim Fox said. ''And when we started missing some shots, we kind of got stagnant. ... They got going, they made some shots. I've been here before and that's happened, and it goes quick.''
Duke: For the second straight game, injured freshman forwards
Duke showed no evidence that it deserves to be ranked lower than No. 6, though the game against the Spartans should provide a more accurate benchmark.
The play of the day came with about 7 minutes left in the first half when Jefferson pinned
Appalachian State: The Mountaineers remain in the state and will visit Charlotte on Monday night.
Duke: The Blue Devils play their marquee home nonconference game Tuesday night with a visit from No. 24 Michigan State in the ACC/Big Ten Challenge.
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