Not counting the incomparable Pete Weber, Ron Mohr is the hottest player in senior bowling, having led qualifying in the past two PBA50 Tour events and finishing fourth in the PBA50 Northern California Classic on Wednesday.   And when it comes to super seniors — age 60 and older — there is no player as hot as Mohr, a 60-year-old right-hander and 2-time PBA50 Player of the Year. That didn’t change on Friday, as Mohr fired 1,860 for eight games to lead the first round of...