Complex sentence: During his time at BC, O'Shea and the Eagles won two Big East regular-season titles and earned four postseason tournament berths during his career, with BC advancing twice to the NCAA Tournament Sweet Sixteen and once to the Elite Eight.
Split into simpler sentences: During his time at BC, O'Shea and the Eagles won two Big East regular-season titles. O'Shea also earned four postseason tournament berths during his career, with BC advancing twice to the NCAA Tournament Sweet Sixteen and once to the Elite Eight.