Center, 7-0, 240, Senior

Most dominating player in country. Consensus all-America, sophomore and junior years. Olympic gold medalist. Great shot blocker. MVP in last year's NCAA tournament. Averaging 14.3 ppg, 9.7 rpg. Held to nine points in teams' first meeting, but had 15 rebounds. Has blocked 107 shots this season. Holds Georgetown single-season records for blocked shots (133) and rebounds (371) and is second in all-time scoring (2,015). BILL MARTIN Forward, 6-7, 215, Senior

Georgetown's second-leading scorer with 12.6 ppg and second-leading rebounder (6.6). Sixth man on last season's national championship team, has developed into one of nation's top offensive forwards. Played for McKinley Tech in Washington, where he was a high school all-America. DAVID WINGATE

Forward/Guard, 6-5, 185, Junior

Third-leading scorer with 12.0 ppg. Has started every game but one since his freshman year. Has skills of guard and forward and has started at both positions. Graduate of Dunbar High School in Baltimore. His 71.9 percentage makes him the best on a mediocre foul-shooting team (63.1 percent, compared to 73.3 for St. John's). REGGIE WILLIAMS

Guard/Forward, 6-7, 180, Sophomore

Averaging 11.2 ppg. Has started 23 games. In two of the last three games (at Providence and at Connecticut), he has led Hoyas with 20 points. Also from Dunbar High School in Baltimore. Consensus national high school player of the year. Scoring threat with a variety of shots. MICHAEL JACKSON

Point guard, 6-2, 180, Junior

Hoyas' floor leader. Leads team with 161 assists, 6.4 per game. A three-year starter, missed games early last season because of separated shoulder. A graduate of South Lakes High School in Reston, where he was The Washington Post's co-player of the year. Averaging 6.9 ppg, but shooting a tepid 45.2 percent from the field. HORACE BROADNAX

Guard, 6-1, 190, Junior

First player off the bench, averaging 19.1 minutes. Usually relieves Jackson. Averaging 5.9 ppg. Good range. Has developed into a fine defensive player. Shoots 59.3 percent from the line. PERRY McDONALD

Guard/Forward, 6-4, 190, Freshman

Has played well in pressure situations. Follows Broadnax off the bench. Averaging 14.9 minutes. Averaging 4.9 ppg but is shooting only 43.2 percent from the field and 42.9 from the line. All-time leading high school scorer in New Orleans. Two-time Junior Olympic boxing champion and Golden Gloves champion in the city. GRADY MATEEN

Center, 6-10, 210, Freshman

Averaging 10.6 minutes. Rarely will play at same time as Ewing. Averaging 3.6 ppg and 2.8 rpg. Had a game-high 12 rebounds vs. Florida Southern. RALPH DALTON

Forward/Center, 6-11, 240, Senior

Dalton's play, along with that of Mateen, Broadnax and McDonald, has been important ingredient in Hoyas' success. Dalton will be first to spell Ewing, although he and Mateen have played about the same amount this season. Averaging 2.7 ppg and 2.4 rpg. RONNIE HIGHSMITH

Forward, 6-8, 225, Freshman

Strong rebounder. Has not seen much action. Spent four years in Army at Fort Lee, Va., after graduating from Roanoke High School in Robersonville, N.C., in 1979. OTHERS: Kevin Floyd (Guard, 6-4, 185, Freshman), Tyrone Lockhart (Guard, 5-10, 155, Sophomore) JOHN THOMPSON

Coach, 13th season

College record: 286-106. Eighth straight season with at least 20 victories. Has been to eight NCAA tournaments and one NIT. Coached at St. Anthony's High School (now All Saints) in the District.