495 South to Route 9 East. Go 3.5 miles then turn right on Oak Hill Road (Mobil station on the corner). Follow Oak Hill (Becomes Oak Street) 2.2 miles south then turn left onto Cordaville Road. Follow Cordaville 0.8 miles and then bear left at blinking light as Cordaville becomes Pleasant Street. Follow Pleasant Street 0.7 miles to light and turn right on Main Street. Follow Main Street south over train tracks and turn right at the next light onto Summer Street (Post Office on the corner). Stone Park baseball field is about a quarter mile down on the right.
From the South
495 North to Exit 21A. Head east on W. Main Street toward Hopkinton. Go 3.9 miles and W. Main becomes Route 135. Follow Route 135 east another 1.4 miles then turn left at the light onto Summer Street (Rite Aid is right in front of you as you turn). Stone Park baseball fields are 0.2 miles down on the left.