May 21, 2026 BetRivers covers the gap and keeps the summer rolling. Ivan lays out the numbers from the BetRivers Poker’s Summer Warm-Up Series. The operator ran 68 events over two weeks, drawing more than 11,000 entries and paying out a total of $524,201, just above their $500,000 guarantee. Some events featured overlays, most notably the $200 Main Event, which fell short with BetRivers covering the $5,000 gap.