Three weeks into the regular season in the boys 7-8 machine-pitch league, two teams have separated from the pack in the standings.Randall Walker Farms and Brent’s Computers each emerged from Tuesday night undefeated at 3-0. Randall Walker Farms won 6-0 over O’Reilly Auto Parts while Brent’s Computers beat Cowan’s Drywall 5-4.Wes Sherrell led Randall Walker Farms to its third straight win with a 3-for-3 night at the plate. Sherrell tripled in the first inning, then drilled a two-run double in the fourth inning that proved to be the final at-bat of the game.