In an effort to speed up play and keep fans engaged, the ATP Tour will use a shot clock at every tournament next year.
The 25-second countdown was first used at the Next Gen ATP Finals in Milan in 2017 and then adopted at the last two Grand Slams, last year’s US Open and this year’s Australian Open.
The WTA is rolling out the shot clock at premier events this year, with full implementation also in 2020.
It was also announced that the inaugural ATP Cup will kick off the 2020 ATP Tour campaign on January 3 and will take place in Sydney, Brisbane and one additional Australian city over a 10-day stretch.
Adelaide will also host an ATP tournament starting on January 13 — the first time it has hosted one since 2008.
The season will culminate with the celebration of the 50th anniversary of the Nitto ATP Finals, first held in Tokyo in 1970.