With the season-opening Twenty20s out of the way, Bay of Plenty club cricket gets down to more serious business this Saturday with the start of the Baywide Cup, the first of the Premier Grade one-day competitions.

The Baywide Cup is played in the first half of the cricket season, with the two top sides at the end of the round robin series meeting in a title decider on December 15.

The second leg of the BOPCA 50 over championships is the time-honoured Williams Cup, which dates back to the 1930s. It will be played in the first three months of 2019.

In the decade since the Baywide Cup was introduced just three Western Bay clubs have won it.

Carrus Mount Maunganui (6 titles) Element IMF Cadets (3) and Eves Realty Greerton (2) have all held the Baywide prize aloft over the last 11 seasons. Mt Maunganui are the only club to win the Baywide/Williams Cup double, achieving the feat in the 2010/11 and 2012/13 seasons.

Cadets will enter the fray on Saturday as the defending Baywide Cup titleholders, after defeating New World Te Puke in last year's final.

A Baker Cup challenge at Blake Park, between current holders Greerton and Mt Maunganui, will open the competition. The former Tauranga Cricket Championship trophy has been reborn as the Western BOP challenge prize, on the line each time the holder plays a Western Bay side in Baywide premier competition.

Greerton took the Baker Cup from Cadets in the opening round of last season's Williams Cup and held it throughout the competition with an unbeaten record in the second half of the season.

In other Baywide Cup opening day action Cadets will meet Te Puke in a rematch of last year's final at the Tauranga Domain, while Owen Delaney Park in Taupo hosts a Lakelands region derby between GM Painters Lake Taupo Cricket Club and Bayleys Central Indians.

The Great Lake side learnt plenty of lessons in their first season in Baywide cricket last year and should give the Rotorua visitors a good battle.

Saturday's Baywide Cup Draw:

Carrus Mount Maunganui v Eves Realty Greerton, Blake Park 3

Element IMF Cadets v New World Te Puke, Tauranga Domain

GM Painters Lake Taupo CC v Bayleys Central Indians, Owen Delaney Park 1

Bond & Co Tauranga Boys College the bye.

Baywide Cup Champions

2017/18 - Otumoetai Cadets

2016/17 - Mount Maunganui

2015/16 - Greerton

2014/15 - Greerton

2013/14 - Mount Maunganui

2012/13 - Mount Maunganui

2011/12 - Otumoetai Cadets

2010/11 - Mount Maunganui

2009/10 - Mount Maunganui

2008/09 - Mount Maunganui

2007/08 - Otumoetai Cadets