2020 Tokyo Olympics men's tennis odds, semifinal predictions: Djokovic vs. Zverev picks from proven expert | CBS Sports Headlines 2020 Tokyo Olympics men's tennis odds, semifinal predictions: Djokovic vs. Zverev picks from proven expert Elite tennis handicapper Sean Calvert has locked in his 2020 Olympics picks for Zverev vs. Djokovic … Continue reading 2020 Tokyo Olympics men's tennis odds, semifinal predictions: Djokovic vs. Zverev picks from proven expert