Adam Durrant was the most prolific trainer in April with 10 winners.
The Karnup horseman enjoyed seven victories at Ascot including a season ending treble on April 26.
The remainder of his wins occurred at Narrogin, Pinjarra and Albany where he won the Cup with Peck.
Stalwart trainer Noel Pateman was next with eight wins.
Pateman prepared a quartet of winners at Mount Magnet and a double apiece at Yalgoo and Dongara.
The father and son team of Lou and Dion Luciani prepared six winners and were two clear of Pat Bermingham Jnr, Steve Wolfe, Paul Hunter and Grant Williams.
Bermingham Jnr has commenced the Kalgoorlie season in flying fashion and leads their premiership standings.
Wolfe won the York Stakes with Mr Utopia and Respondent capped off a terrific month for Williams with victory in the WA Derby.
Geraldton’s Tony Scally won the Dongara Cup for the third successive year with Richtiram Lass.
Fiona Ducas took out the Mount Magnet Cup courtesy of Catchphrase while Terry Brennan joined forces with Court Crusader in the Yalgoo Cup.
Justin Warwick and his daughter Lucy successfully combined for the first time when Canyousee Mesmile won at Pinjarra.
Nic Cox enjoyed the high and lows of racing when Blather won a tough encounter at Ascot but returned having bled for the second time.
Be So Ryski gave Robbie Witten his first Narrogin Cup success.
Travinator won first-up for Dan Pearce after two throat operations and 16 months on the sidelines.