After earning PBA50 Player of the Year honors in 2017, Brian LeClair’s bowling career was threatened by a balky left knee. A brace has enabled him to keep competing, but he wasn’t reaching the same level of success — until the last two weeks, when he won his fourth and fifth PBA50 Tour titles. No. 4 came last Friday night in the PBA50 River City Extreme Open and No. 5 came Thursday in the PBA50 South Shore Open presented by Ebonite at Olympia Lanes in Hammond, Indiana....