RALEIGH, N.C. — Roy Hibbert spun past the Maryland-Baltimore County defender and hit a reverse layup. On the next possession, Georgetown's giant kept tipping the ball out of the Retrievers' reach before scoring again.

Hibbert went over and around undersized UMBC all day, finishing with 13 points to lead the second-seeded Hoyas past the 15th-seeded Retrievers, 66-47 today in the first round of the Midwest Regional.

Jonathan Wallace added 13 points on 5-of-10 shooting and Austin Freeman finished with 11 for the Hoyas (28-5), who shot 51 percent and held UMBC scoreless for a 7-minute stretch in advancing to face 10th-seeded Davidson on Saturday.

Unlike fellow No. 2 seeds Tennessee and Duke, Georgetown had a relatively easy time throughout en route to its 18th win in its last 19 first-round games.

Darryl Proctor scored 16 points and Brian Hodges added 11 for America East champion UMBC (24-9).

The Retrievers — who didn't have a starter taller than 6-foot-9 — had no answer for the 7-foot-2 Hibbert on either end of the floor.

He altered UMBC's shots, drew double-teams and kicked the ball out for open looks on the perimeter while once again proving that there is more to his game than just towering over tiny opponents.

During one memorable sequence, he zipped past Cavell Johnson on his way to a reverse layup. Later, he kept tipping the rebound of Freeman's jumper near the rim — and none of the Retrievers could reach it.

Patrick Ewing Jr. added 10 points for the Hoyas, who let UMBC hang around for only about 10 minutes of this one before taking control with a 22-5 run late in the first half that overwhelmed the suddenly cold-shooting Retrievers.

The Big East's stingiest defense forced UMBC into eight straight misses — including five 3s — during its dry spell late in the half, and took a 14-point lead when Chris Wright's 3-pointer from the left corner made it 31-17 with about 3 minutes before the break.

Ray Barbosa finally snapped the drought with a 3 at about the 1-minute mark, but Wright drained a 3 from the left corner that beat the halftime buzzer, made it 34-22 and pushed the lead into double figures to stay.