This year has seen plenty of changes. My favorite rider, Bubba Stewart, looks to be finally hanging it up (the official word is that he has yet to announce his plans). Ken Roczen, arguably the most talented rider in the field, switched to HRC Honda after a second place finish last year. Ryan Dungey, who won the last two championships, is back but he suffered a cracked vertebrae in a crash during outdoors this year and is getting older, which has even sparked rumors of his retirement after this year. And then there's the addition of Cooper Webb, who won the 250cc West class in convincing fashion and is stepping up to the Yamaha factory 450 team.