Off-season begins with vacation, but quickly turns to pre-season training, as Johanna Konta and Katie Swan are hiting the gym. At least they're having some fun while putting in the work.

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Konta is fully invested in gym time these days.

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Swan took advantage of her down time on vacation in the Dominican Republic before ramping up training for 2020.

Konta ended her year early after reaching the quarterfinals at the US Open because of a knee injury. She'll start 2020 ranked No. 12.

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Swan is ranked No. 240 and has played primarily on the ITF tour this fall, winning a W25K in October.