Renner (66-73) and Ethan Jaehn (70-69) finished tied at 5-under par after 36 holes in the Boys Open 14-18 Division, forcing a tie-breaking playoff won by Renner on the first hole.
Adam Wrenn (73-67) took third place at 4-under par, while Nick Huffman (75-66) and Simon Grey (71-70) finished tied for fourth at 3-under.
Vinceri (72-70), the only player under par in the Girls Open 12-18 Division, finished at 2-under en route to a five-stroke victory. Emily Song (73-74) finished second at 3-over, while Hannah Lim (76-72) took third at 4-over.
The 2021 OGA Junior Major Tournaments schedule continues June 15-16 with the Peter Jacobsen Junior Challenge held at Trysting Tree Golf Club in Corvallis.