| | | |
| June 5, 2018 | | Upper Valley Nighthawks at Ocean State Waves | Ppd. |
| June 6, 2018 | W | Ocean State Waves 8 at Danbury Westerners 3 | Final |
| June 7, 2018 | L | New Bedford Bay Sox 8 at Ocean State Waves 7 | Final (10) |
| June 8, 2018 | L | Ocean State Waves 9 at Danbury Westerners 10 | Final (10) |
| June 9, 2018 | L | Newport Gulls 5 at Ocean State Waves 1 | Final |
| June 11, 2018 | W | Ocean State Waves 10 at Mystic Schooners 7 | Final |
| June 12, 2018 | W | Ocean State Waves 3 at Plymouth Pilgrims 2 | Final (10) |
| June 14, 2018 | W | New Bedford Bay Sox 4 at Ocean State Waves 5 | Final |
| June 15, 2018 | W | Ocean State Waves 7 at Valley Blue Sox 2 | Final |
| June 16, 2018 | L | Plymouth Pilgrims 14 at Ocean State Waves 7 | Final |
| June 17, 2018 | W | Ocean State Waves 7 at Upper Valley Nighthawks 6 (Game 1) | Final (7) |
| June 17, 2018 | L | Ocean State Waves 1 at Upper Valley Nighthawks 6 (Game 2) | Final (7) |
| June 19, 2018 | W | Ocean State Waves 10 at Danbury Westerners 6 | Final |
| June 20, 2018 | W | Ocean State Waves 7 at Winnipesaukee Muskrats 4 | Final (11) |
| June 21, 2018 | W | Newport Gulls 1 at Ocean State Waves 8 | Final (7) |
| June 23, 2018 | | Danbury Westerners at Ocean State Waves | Ppd. |
| June 24, 2018 | L | Ocean State Waves 1 at Vermont Mountaineers 4 | Final |
| June 26, 2018 | L | Keene Swamp Bats 6 at Ocean State Waves 2 | Final |
| June 27, 2018 | | Ocean State Waves at North Adams SteepleCats | Ppd. |
| June 28, 2018 | | Sanford Mainers at Ocean State Waves | Ppd. |
| June 29, 2018 | W | Ocean State Waves 11 at Newport Gulls 5 | Final |
| June 30, 2018 | L | Plymouth Pilgrims 9 at Ocean State Waves 3 | Final |
| July 2, 2018 | L | Danbury Westerners 6 at Ocean State Waves 3 | Final |
| July 3, 2018 | L | Ocean State Waves 3 at New Bedford Bay Sox 5 | Final |
| July 5, 2018 | L | Ocean State Waves 9 at Plymouth Pilgrims 13 | Final |
| July 6, 2018 | W | Danbury Westerners 3 at Ocean State Waves 4 | Final |
| July 7, 2018 | W | Ocean State Waves 7 at New Bedford Bay Sox 2 | Final |
| July 9, 2018 | W | Ocean State Waves 17 at Newport Gulls 1 | Final |
| July 10, 2018 | W | Valley Blue Sox 3 at Ocean State Waves 7 | Final |
| July 12, 2018 | W | New Bedford Bay Sox 2 at Ocean State Waves 3 | Final |
| July 13, 2018 | W | Ocean State Waves 9 at Newport Gulls 5 | Final |
| July 14, 2018 | W | Plymouth Pilgrims 3 at Ocean State Waves 6 | Final |
| July 16, 2018 | L | Ocean State Waves 3 at Mystic Schooners 4 | Final |
| July 17, 2018 | | Mystic Schooners at Ocean State Waves | Ppd. |
| July 18, 2018 | L | Mystic Schooners 12 at Ocean State Waves 7 | Final |
| July 19, 2018 | W | Mystic Schooners 4 at Ocean State Waves 10 | Final |
| July 20, 2018 | L | Ocean State Waves 1 at Plymouth Pilgrims 3 | Final |
| July 21, 2018 | L | Newport Gulls 7 at Ocean State Waves 6 | Final (10) |
| July 23, 2018 | W | Ocean State Waves 4 at Sanford Mainers 0 (Game 1) | Final (7) |
| July 23, 2018 | W | Ocean State Waves 6 at Sanford Mainers 1 (Game 2) | Final (7) |
| July 24, 2018 | W | Vermont Mountaineers 1 at Ocean State Waves 7 | Final |
| July 25, 2018 | | Ocean State Waves at Keene Swamp Bats | Ppd. |
| July 26, 2018 | W | North Adams SteepleCats 2 at Ocean State Waves 6 (Game 1) | Final (7) |
| July 26, 2018 | W | North Adams SteepleCats 4 at Ocean State Waves 10 (Game 2) | Final (7) |
| July 27, 2018 | L | Ocean State Waves 4 at Mystic Schooners 5 | Final |
| July 28, 2018 | W | Winnipesaukee Muskrats 1 at Ocean State Waves 8 | Final |
| July 31, 2018 | W | Mystic Schooners 8 at Ocean State Waves 10 | Final |
| August 1, 2018 | L | Ocean State Waves 5 at New Bedford Bay Sox 6 | Final (11) |
| August 3, 2018 | W | Mystic Schooners 2 at Ocean State Waves 9 (Playoff) | Final |
| August 5, 2018 | W | Ocean State Waves 8 at Plymouth Pilgrims 5 (Playoff Gm. 1) | Final |
| August 6, 2018 | W | Plymouth Pilgrims 5 at Ocean State Waves 8 (Playoff Gm. 2) | Final |
| August 8, 2018 | L | Ocean State Waves 3 at Valley Blue Sox 5 (Champ. Gm. 1) | Final |
| August 9, 2018 | L | Valley Blue Sox 19 at Ocean State Waves 6 (Champ. Gm. 2) | Final |
Ocean State Waves Schedule
