That's for sure. Look at the active pitchers on this list and how far away from 300 wins they are....
List of Major League Baseball leaders in career wins - Wikipedia, the free encyclopedia
Of the list, I'd say Roy Halladay has the best shot. He's 32 and has 140 wins in his career so far.
Let's say he has 10 more for the year, which would put him at 150. He would then have to average 15 wins over the next 10 years, which is doable if he stays healthy.