Miami of Ohio stunned defending national champion and No. 3-ranked Marquette with an 84-81 overtime victory in the first round of the NCAA basketball tournament yesterday.

Unranked Miami, loser of eight games this season but still the MidAmerican Conference champion, showed the poise late in the game that had been expected, but didn't come, from Marquette.

Missed free throws, careless ball handling and a fit of anger by center Jerome Whitehead and Coach Hank Raymonds helped dethrone Marquette as Miami overcame a 10-point deficit in the final three minutes of regulation play to send the game into overtime.

In the other first-round Mideast regional game at Market Square Arena, Big Ten champion Michigan State buried Providence, 77-63, to advance with Miami to the regional semifinals next week to Dayton.

"I let the team down. I didn't do a very good job of coaching," Raymonds said. "This team was good enough to have won the national championship."

Marquette All-America Butch Lee, who scored 27 points, was having a field day going one-on-one against Miami's man-to-man defense and had 14 points in the first 15 1/2 minutes of the second half as the Warriors coasted along with a 68-58 lead.

Then it happened.

Miami's John Shoemaker had a layup blocked by Jim Boylan, Whitehead grabbed the rebound and Shoemaker, trying for a steal, grabbed Whitehead's arm.No foul was called but Whitehead, while protecting the ball, swung an elbow that caught Shoemaker square in the face and knocked him on his back.

Official Peter Pavia of the ECAC called Whitehead for a flagrant personal foul and ejected him from the game, and after Raymonds voiced his objection, Pavia assessed him a two-shot technical foul.

Rich Babcock shot the personal-foul free throws for Shoemaker who struggled to the sideline but later returned to the game. Babcock made one of the two shots and Archie Aldridge made both of the technical foul shots.

Miami also got the ball out of bounds and got two more points on a short jump shot by Rich Goins.

That cut Marquette's lead in half to 68-63 with 3:10 to play and the Warriors were never the same.

"I think the Whitehead play was the critical play," said Miami Coach Darrell Hedric. "It switched the momentum. I'm sure Whitehead didn't mean anything by it; it just happened."

Raymonds said it was the first technical foul he has gotten all season and that Whitehead has never been involved in anything like the incident before.

"I was so upset because there were a few things that should have been called before that that weren't and that helped lead up to what happened," Raymonds said. "And I told the official that."

A steal by Shoemaker and a layup by Aldridge, followed by two free throws by Randy Ayers, eventually tied the score at 73 with 52 seconds to play.

Lee made one of two free throws with 28 seconds left in regulation to put Marquette ahead, 74-73.

Miami beat Marquette's full-court press with a long pass to Aldridge who scored a layup, but charged into Jim Boylan as he did it, with 20 seconds left.

The basket put Miami ahead, 75-74, and sent Boylan to the free-throw line with a one-and-one. He made only one of the shots and the game went into overtime tied at 75.

Lee made a 10-footer in the lane with 1:21 left in the overtime period to give Marquette an 81-79 lead, but the Warriors did not score again.

Marquette tried to control the ball for one last good shot, but Gary Rosenberger drove to the baseline and was cut off by Ayers. With no place to go except out of bounds, Rosenberger threw a wild pass right to Shoemaker with 30 seconds left.

In a frantic attempt to get the ball back, Ulice Payne fouled Babcock, who made two free throws with 14 seconds left.

Marquette got the ball back two more times, but couldn't score.