Between 1984 and 2008, Dennis Welshans recorded one of the top 5 seasonal averages in the LCBA in 14 different seasons, including the 1983-84, 2002-03 and 2005-06 seasons when he won the County Association Seasonal High Average Award.  Only five other area bowlers in the history of the local association have won more Seasonal High Average Awards than Denny.  His career high average of 237 during the 2002-03 season, was the third highest seasonal average ever achieved in the County Association up until that time.  In 1994 and 2002, Denny won the County Seasonal High Series Award.  His career high series of 847 in 1994 was the third highest all-time series in the LCBA up until that time.  All told, Welshans bowled fourteen career 800 series, including six before 1997 when only two other local bowlers had more.  In 1997 after bowling his seventh 299 game, Denny stood in second place on the all-time County list for most 299 games.  He also had twenty-two career 300 games.

Denny started his bowling career at the age of 11 in the early 1970’s, when he joined the Junior Bowling Program at the Jersey Shore YMCA Lanes.  He started bowling in adult leagues in the late 1970’s.  At the end of the 1983-84 season, Welshans was named to the LCBA All Star Team and was honored as the Association’s Most Valuable Bowler for that season, the last season that those honors were awarded.  In 1988, 1993, 1994 and 2000, Denny won the LCBA Bowler of the Year Tournament.  In that 1994 Tournament, he started at the bottom of the stepladder finals, and averaged 222 in winning all 4 of his matches, one of only three men to do that up until that time. Between 2002 and 2008, Welshans won 5 PBA Regional tournament titles.