Hardworking forward overcame a high school knee injury to earn a Division I scholarship ... comes to Duquesne from Mercersburg (Pa.) Academy where he worked his way back following surgery to repair a torn ACL in December of 2005 ... will provide depth in the Dukes' frontcourt ... accompanied the team to Toronto for a preseason Labor Day weekend foreign tour ... finished the trip strong with 10 points versus Sheridan College and nine points, three assists and two steals against the University of Waterloo in the last of DU's four games in three days ... averaged 6.5 ppg. in the four games.

Prep School Mercersburg Academy in Mercersburg, Pa. (head coach Mark Cubit) ... averaged 19.8 points, 11.0 rebounds, 3.0 assists and 4.0 blocks per game for the 7-16 Blue Storm ... topped the 30-point mark twice on the way to being named the team's Most Outstanding Player and Mid-Atlantic Prep League (MAPL) All-Conference ... hit seven 3-pointers in scoring a season-high 35 points against the University of Pennsylvania JV ... added 15 rebounds, seven blocks and five assists in that game ... scored 31 against Martinsburg (W.Va.).

High School Vincentian Academy in McCandless Township just north of Pittsburgh, Pa. (head coach Buzz Gabos) ... was a four-year starter who earned spots on both the Pittsburgh Post-Gazette WPIAL Class A Fab 5 and Pittsburgh Tribune-Review Class A First Team as both a sophomore and junior ... played with DU sophomore guard Jason Duty at Vincentian, one of the smallest schools in the WPIAL ... averaged 22.0 points per game as a junior - including a school record 49 (24-of-37 from the field) in an overtime win over Riverview ... had 26 points, 16 rebounds and six blocks against the City League's Oliver Bears ... scored 30 points, pulled down 13 rebounds and blocked six shots in a little over two quarters of action against West Allegheny ... averaged 21.3 ppg. as a senior before tearing the anterior cruciate ligament in his right knee in December ... finished his career with 1,473 career points ... received recruiting interest from Winthrop, Akron and Davidson prior to the injury ... played for current North Hills High School coach Buzz Gabos at Vincentian.

Personal Family lives in the Franklin Park area of Pittsburgh ... his father, Bernie, is a Duquesne grad ... has been friends with DU sophomore guard Jason Duty since kindergarten ... played alongside Duty at both St. Alphonsus School and Vincentian Academy ... Temple, Richmond and Lehigh showed interest in Theis following his season at Mercersburg ... business major ... full name is David Michael Theis ... date of birth: 4/29/88.