Honours are even in the game of the round between South Perth and Joondalup, with the first session of day two shaping as crucial for both sides.
South Perth posted 232 before being bowled out, with Trent Ovens returning to form with 76 at the top of the order.
Rob Jones scored his second half-century in a row, but all other batsmen struggled to build a big score.
Clint Hinchliffe took excellent figures of 3-21, while James Boyland took two wickets on his return to the side.
Joondalup finished 1-24 in reply, with Garrick Morgan not out on 15 and Hinchliffe on three.
In Sunday’s Premier Cricket T20 match, Subiaco Floreat easily accounted for the Sky Blues by seven wickets at Floreat Park Oval.
In the Female A-Grade T20 competition, Perth Scorchers duo Piepa Cleary (22 and 1-8) and Katie Hartshorn (2-13) warmed up for WBBL with impressive form as South Perth knocked off University by three wickets at Richardson Park.
Perth Cricket Club is looking to use its Round 7 fixture against Mt Lawley at Breckler Park to consolidate its spot in the top six.
All of the top order got amongst the runs on the first day of the match, with half- centuries to Jacob Snadden, Dain Moreton and Luke Jury.
Shre Jain played a late-innings cameo of 49n.o. to enable Perth to finish the day in a strong position of 9-348.