Complex sentence: Grant has spent most of his career in the American Hockey League, however he was called up early in the 2006--07 NHL season to the Philadelphia Flyers, and made his NHL debut on October 26,2006.
Split into simpler sentences: Grant has spent most of his career in the American Hockey League. However, he was called up early in the 2006--07 NHL season to the Philadelphia Flyers, and made his NHL debut on October 26,2006.