History of the U.S. Open
With the exception of 1997 and 2014, the U.S. Open has been held in some form every year since 1942.
The first modern-day U.S. Open tournament in the PBA took place in 1971 and was won by Mike Limongello. Prior to 1971, this event was known as the BPAA All-Star. BPAA All-Star winners in the PBA era (1959–1970) were initially not credited with PBA titles for their victories. A rule change in 2008, however, retroactively awarded titles to the winners if they were PBA members at the time of their victories. With five wins, Pete Weber holds the most U.S. Open trophies of all time, one more than his father, Dick Weber, and Don Carter.
Unable to find viable sponsorship, the U.S. Open was canceled for 2014, amid speculation that the tournament may not return at all. However, the USBC and BPAA later reached a three-year agreement that brought the tournament back for 2015, 2016 and 2017. The USBC and BPAA secured Bowlmor AMF, the largest operator of bowling centers in the world, as the title sponsor for 2015. The 2015 tournament took place November 2–8 in Garland, Texas.
The 2017 U.S. Open was held at Flamingo Bowl in Liverpool, New York. For the first time, the U.S. Open had a partial "invitational" field. Among those invited were top money leaders from the PBA Tour and PBA Regional Tour, top performers from a variety of USBC events, members of Team USA and Junior Team USA, and past winners of the U.S. Open itself. The "open" portion of the tournament is actually a pre-tournament qualifier (PTQ) with a maximum of 80 entries. Top finishers from the PTQ then join all those who accepted invitations to round out the starting field of 144 players. The 2018 event has 116 automatic entries, based on 2017 performance, and only 28 open spots available via the PTQ.