The Mariners will look to bounce back from last weekend’s 42-run loss to Subiaco-Floreat, which saw the club surrender its spot in the top six despite the best efforts of WA representatives Craig Simmons and Sam Whiteman.
Former Western Warriors batsman Simmons claimed 4-49 with the ball as the Lions posted a commanding total of 9-263.
Seventeen-year-old leg spinner Kyle Gardiner claimed 2-48 in just his second first grade match, while Aidan Andrews and Chris Loveridge chipped in with a wicket each.
Simmons then followed up his efforts with the ball to top score for Rockingham-Mandurah, his 60 coming from just 62 deliveries, combining with current Warriors wicketkeeper Whiteman (41) in a 93-run partnership for the third wicket.
But their efforts, nor the supporting knocks from John Murphy (31) and Tony Coulson (29), were enough as the Mariners could only post 8-221 from their 50 overs.
The club’s second grade side also lost to their Subiaco-Floreat counterparts, suffering a 123-run humbling defeat and remaining winless in the competition.
With only six rounds remaining, the first graders face the daunting task of playing fellow finals aspirants Scarborough, Mt Lawley, Melville and South Perth in successive fixtures.