[3] He played club cricket for Kaikorai in the city where he was known as an "excellent fieldsman".
[6] By the start of the 1952–53 season Flaws was considered a "promising young wicket-keeper and forceful batsman"[7] and was thought to have "excellent prospects of reading international class".
[1] During the 1960–61 season Flaws briefly held the record for the most wicket-keeping dismissals in the Plunket Shield season with 21―13 catches and eight stumpings―before being overtaken by Trevor McMahon who effected five dismissals in the final innings of the final match of the season between Otago and Wellington, beating Flaws by a single dismissal.
[10] During the same season he was part of a record eighth wicket partnership for Otago, scoring 35 runs―his highest first-class score―in a partnership of 149 with Bert Sutcliffe against Northern Districts at Seddon Park.
[11] In total Flaws played in 27 first-class matches for Otago, scoring 438 runs, taking 44 catches and effecting 29 stumpings.