Claim: Roger Federer plays professional tennis.

The ATP Finals is the second highest tier of men 's tennis tournament after the four Grand Slam tournaments .   It is held annually in November at the O2 Arena in London , United Kingdom . The ATP Finals are the season-ending championships of the Association of Tennis Professionals -LRB- ATP -RRB- World Tour , featuring the top eight singles players and doubles teams of the ATP Rankings . The tournament was first held in 1970 .   Roger Federer holds the record for the most singles titles , with six , while Peter Fleming and John McEnroe hold record with 7 titles in doubles .   In the current tournament , winners are awarded up to 1500 rankings points ; with each round-robin loss , 200 points are deducted from that amount .