Original sentence: At age 20, Harkin met Jay Miron and Matt Hoffman, organizers of the Woodward Camp.Harkin subsequently went into larger competitions, where his 360 backflip gained him a great deal of attention and sponsorship, as BMX and other extreme sports entered the mainstream
Edited sentence: At age 20, Harkin met Jay Miron and Matt Hoffman, organizers of the Woodward Camp, and subsequently went into larger competitions.Performing his 360 backflip at these events gained him a great deal of attention and sponsorship, as BMX and other extreme sports entered the mainstream