In match play the competitors have a bit different situation. The player with the lowest playing handicap doesn’t get any handicap strokes and plays at scratch. The other players receive the difference between their own playing handicap and that of the player with the lowest playing handicap.
In WHS for UK and Ireland a player competing from a set of tees with a different CR/par than other players receives more or fewer strokes for the round, depending on the difference between the CRs/pars. Therefore, for golfers competing in GB&I there is a separate calculator with the appropriate adjustment in the Playing Handicap calculation .
with calculation of Match Play current and final score.
update: September 2022