We took a look at the winners' bags from the 2013 PGA Tour events and found that six different drivers won two or more times in 2013. Of all the winners, more than half had their loft set to 9.5 degrees. One driver won five or more times on the PGA, LPGA, and Champions Tours. Here are the six highest-performing drivers on the PGA Tour in 2013, and the most successful of the LPGA and Champions Tours.