Bridge: Matchpoints vs IMPs: Different game?
Barry Crane was throughout his lifetime regarded as the quintessential matchpoint player - yet due to his busy work schedule competed almost solely in weekend regional events dominated by a Saturday Open Pairs and a Sunday Swiss Team. His great success over several decades in both events speaks to the relatively minor differences in strategy between the two types of scoring. 

One must know which game one is playing but only in extended team play, with matches longer than 16 boards, are 4-card majors or even fast-in-and-fast-out bidding systems like Crane's starting to have a noticeable disadvantage.