Complex sentence: Seguin signed an entry level contract with the Bruins on August 3,2010, and made his NHL debut on October 9,2010 in a 5-2 loss to the Phoenix Coyotes.
Split into simpler sentences: Seguin signed an entry level contract with the Bruins on August 3,2010. He made his NHL debut on October 9,2010 in a 5-2 loss to the Phoenix Coyotes.