He played in the Bay's warm-up game against Wairarapa here last weekend, impressing Schaw with his three wickets.
"I thought I had to bring in another spinner with Ajaz not there," he says of Patel who has consistently taken frugal wickets but has found himself on the bench of the Henrich Malan-coached Stags because Kain is the No 1 tweaker in the white-ball formats.
"We want to take 20 wickets in this game [v Taranaki] for an outright win."
Schaw says Jayden Lennox is out of the mix due to the demands of tertiary studies and working in Auckland during the break.
Seamer Blair Tickner also is in the CD mix for the Ford Trophy one-day match against Canterbury Kings in Christchurch tomorrow.
Not having claimed an outright victory away over Wairarapa before Christmas makes it imperative for the Bay to come away with maximum points before the litmus test against a bullish Michael Mason-coached Manawatu.
The Jacob Smith-captained Bay are aware of how Taranaki can easily become a banana skin should they start looking too far ahead of tomorrow.
For Schaw, it'll be obligatory for his men to take their batting up to another threshold.
"Angus [Schaw] got 80 odd not out and Indy [Indika Senarathne] comes in fresh from CD to see off the new ball to put up a big score," he says.
The Phil Stoyanoff-prepared wicket, he suspects, will have a little bit of greenish tinge on it "to get something out of it".
With the pace battery humming so far this summer he expects the spinners of Angus Schaw and Pretorius to keep proceedings pretty terse for the visiting batsmen.
"Jake [Smith] is back into his bowling so that gives us another dimension to the situation," says the senior Schaw.
The biggest factor for them leading up to this week up has been their catching.
"We've only put one down throughout the Hawke Cup campaign."
BOTH TEAMS
Pay Excellence HAWKE'S BAY: Jacob Smith (c), Matt Edmondson, Rupert Young, Indika Senarathne, Angus Schaw, Callum Hewetson, Scott Schaw (wkt), GC Pretorius, Kurt Richards, Charlie Robson, Ben Stoyanoff, Liam Dudding.
Coach: Colin Schaw.
Revital Fertilisers TARANAKI: Mattie Thomas (c), Dean Robinson, Jason Dombroski, James McDougall, Liam Muggeridge, Phil Barraclough, Ryan Watson, Tom McDougall, Sam Fastier, Taylor Williams, Jordie Barrett, Jackson Braddock-Pajo (wk).