[1] Welp was the Pac-10 Player of the Year in 1986, and helped lead the Huskies to consecutive conference regular-season titles.

"[4] He was traded by the 76ers, along with Maurice Cheeks and David Wingate, to the San Antonio Spurs, in exchange for Johnny Dawkins and Jay Vincent, during the off-season of 1989.

For the 1996–97 season, Welp played with the Greek League club Olympiacos, winning the EuroLeague title with them[7] (and also the Triple Crown).

[9] Welp won the gold medal at the EuroBasket 1993, as a player for the senior Germany national team.

After Welp retired from playing professional basketball in 1999, he lived in Seattle, Washington, with his wife, Melanie, and three children.

[4] He worked at a construction-supply business in Woodinville, for Tim Burnham, a former football player, with whom he had become friends during college.