Defending champion Chris Barnes maintained his lead in the 2024 PBA50 World Championship after Sunday’s first two rounds of match play, but the Hall of Famer is looking over his shoulder. Those chasing him include Hall of Famers, top players, and hot newcomers — some who he encouraged to bowl the PBA50 Tour. “I am my own worst enemy,” Barnes quipped in this PBA news release. “I always thought JJ (John Janawicz) should come out here and then Mika was laying around...