2018 PBA50 River City Extreme Open Finals Step 1. In the opening stepladder match No. 4 qualifier Brian Kretzer took on No. 5 qualifier PBA Hall of Famer and four-time PBA50 Tour winner Norm Duke. <br /><br />The PBA50 Tour regular season concludes with the season’s final major when Spectrum Lanes in Wyoming, Mich., hosts the PBA50 Cup presented by DV8 Aug. 9-12. Players 60 and over will conclude the season with the PBA60 Dick Weber Championship Aug. 14-16 at Pro Bowl West in Fort Wayne, Ind.
