For the fourth time in as many races, William Smith College first-year Riley Poisson led the Herons to the finish line, placing fourth overall at the Harry F. Anderson Invitational on Saturday. She covered the 5-kilometer course 18:41.0, less than 12 seconds behind the winner. Against a field of 243 runners representing all three NCAA divisions, Poisson trailed only a pair of DII runners on their home course and a runner from Buffalo State. She finished ahead of No. 3 Geneseo's entries.