It wasn't the farewell Shellharbour were hoping for as Wiseman Park completed a stunning Illawarra grade 4 pennant triumph at Warilla Bowling Club on Saturday.

Wiseman Park won a tense flag decider 64-58 to make it three wins over the other playoffs teams after finishing the regular season in fourth spot.

Wiseman Park beat Dapto in their elimination final, then upset minor premiers Bellambi before completing a memorable season with their grand final win over Shellharbour.

The Shellharbour bowling club will close at the end of 2014 but it had its grade 4 team, which included three generations of the Peters family, make the grand final.

Paul Peters skipped a rink with his father Barry, 11-year-old son Toby playing as the lead, and Lube Brglevski.

Paul and Barry Peters played in Shellharbour's grade 1 team in 2013 before joining Toby in his first season of pennants.

Toby won a round of the club's minor singles as a 10-year-old last year and is still alive in the 2014 minor singles.

The club's youngest bowler also juggles a passion for rugby league and made a 9.30am dash from the Shellharbour Stingrays under 11s to take his place at Warilla.

Paul Peters' team had a 21-19 win over Barry Dileva, while Wiseman Park won the other two rinks with Bill Owen beating Dick Hambly 24-19 and David Cole beating Mick Barber 21-18.

Meanwhile, there were a number of tight finishes in the other lower grade pennant deciders.

In grade 5, Helensburgh Scarborough Wombarra won a final end thriller 64-61 against Albion Park.

The match was tied 61-61 heading into the 63rd and final end, which had to be replayed, with Helensburgh Scarborough Wombarra getting up by three shots.

Windang are grade 6 champions following an epic 57-55 win over Figtree RSL.

Figtree had a chance to snatch victory with the final bowl of the match but a draw shot just missed.

Berkeley completed a fairytale season by winning the grade 7 title with a 75-55 win over Dapto Citizens.

Berkeley entered two teams in grade 7 and weren't sure how the move would go early on, but are now Illawarra's grade 7 champions.