COLLEGE PARK, Maryland (Ticker) -- Jamar Smith cracked one of the nation's toughest defenses.

Smith scored six of his career-high 25 points in overtime as 25th-ranked Maryland held on for a riveting 73-67 victory over No. 13 Wisconsin in the ACC-Big Ten Challenge.

Smith dominated Mike Wilkinson inside, also grabbing 12 rebounds for his fourth straight double-double. After Wilkinson missed a pair of free throws, Smith maneuvered around him at the other end for a layup and a 67-65 advantage with 55.5 seconds to go.

"I'd say this is the best game I've played at Maryland so far, but there is more to come," Smith said. "It's hard for big guys to defend me because of my quickness."

Devin Harris missed a baseline jumper for the Badgers and Maryland freshman D.J. Strawberry was fouled. With his famous father in attendance, Strawberry sank his first attempt and missed his second, but Smith grabbed the rebound and was fouled. His free throws with 40 seconds to go made it 70-65.

Defense is the major strength for Wisconsin, which has kept opponents under 33 percent shooting in its first three games. Maryland shot 48 percent (30-of-62), including a 10-of-18 effort by Smith.

"In those last five to eight minutes and in overtime, Smith was the guy," Wisconsin coach Bo Ryan said. "It was his play that made the difference in the game."

Wisconsin (3-1) nearly won it in regulation as Wilkinson's 3-pointer capped an 11-3 spurt for a 61-60 edge with 12.5 seconds to go. John Gilchrist missed a bank shot for the Terrapins, but Nik Caner-Medley grabbed the offensive rebound and made 1-of-2 at the line to force the extra session.

Strawberry actually had a chance to win it before overtime after intercepting an inbounds pass, but his shot from past half-court hit the front of the rim.

"They made a great run at us and took the lead and we had to really suck it up to win the thing," Maryland coach Gary Williams said. "I think we really showed some things tonight."

Gilchrist was another catalyst for Maryland with 12 points and a career-high nine assists. Backcourt mate Chris McCray netted 16 points.

Harris, who scored 24 points, helped fuel Wisconsin's furious comeback near the end of regulation. He drained a 3-pointer to cut the deficit to 59-56 with 1:33 to go and found Wilkinson on the right wing for the 3-pointer that provided a one-point edge.

The Badgers bottled up Gilchrist, but Caner-Medley snuck in for the rebound and was fouled by Zach Morley. Caner-Medley, who netted seven points, missed the first before sinking the second.

"We just have to come out and learn from our mistakes," Harris said. "We have to be a little bit more disciplined and buy into what the coach is saying."

Wilkinson netted 14 points and was the only other play in double figures for the Badgers, who shot 36 percent (22-of-61).