Riley Simonetti had a career high three hits against Richfield.
Wyvell needed just 78 pitches to get through his six innings of work, allowing a run on two hits with two walks and six strikeouts.
The Red Knights scored three times in the top of the first inning as Riley Crane led off with a walk and moved to second on a ground out. Riley Simonetti singled to put runners on the corner and Wyvell hit the next pitch down the left field line for a double.
Derek Drees had an RBI infield single in his first varsity at bat and Jack Qualen and Joseph Martino coaxed back-to-back walks to drive in the third run of the inning.
BSM also had a three-run fifth inning, taking a 7-1 lead, as Will Whitmore drove in a run when he reached on a fielder's choice, Jamison Schuh doubled in a run and Simonetti singled in a run.
Simonetti led the Red Knight offense with three hits and a pair of RBI. Wyvell and Schuh both had two hits while Whitmore drove in a pair of runs.
Next up for BSM is another Metro West Conference game, Thursday, at Robbinsdale Cooper, beginning at 4:30 p.m.