After placing third as a ninth-grader and runner-up a year ago, Eagan junior Cassandra Li is again in contention for an individual state tennis title. The fourth-seeded Li moved into the Class 2A singles semifinals with a 6-4, 6-2 victory over Edina’s Rashi Singh on Thursday at Baseline Tennis Center. She’ll meet top-seeded Claire Loftus of Rochester Mayo back on the U campus at 8 a.m. Friday, …