The club stalwart was named the medal winner at a ceremony on Saturday night at Lark Hill.
The medal is in honour of a former club player killed in a car accident and goes to the player judged most valuable by teammates, with votes cast each round.
Simmons polled 24 votes, eight clear of runner-up Danny Woollard.
Despite a disappointing end to the season for several grades, second grade qualified for finals.
First grade lost convincingly to Claremont Nedlands after posting 147 to Claremont Nedlands’ remarkable 324.
Third grade were defending 229 and came agonisingly close to an upset win.
Zac White took 5-54 but Claremont Nedlands fell across the line all out for 230.
Fourth grade bowled superbly to defend 147 and dismissed the visitors for 142. Guy Lewis (3-22), Ganish Chaudhari (3-26) and Lachlan Harris (3-56) did the damage with the ball.
The club under-15s and under-17s have qualified for finals.