The Champions Series was a series of tennis tournaments designed for former champion members of the ATP Tour. It operated from 2006 to 2021.

It consisted of tournaments where top players of the sport competed in one-night, four-player events with two one-set semifinal matches and a one-set championship match played in one evening. Eligible players competing on the Champions Series either held a Top 5 singles ranking; been a Grand-Slam singles finalist, or a singles player on a championship Davis Cup team during their ATP tour playing careers. It also allowed one wild card of their choice at each event. The series was produced by Inside Out Sports & Entertainment. The minimum age to participate in a tournament was 30.

No matches were played in 2013 as the series realigned from the fall to the spring. A new match format was introduced to complete all play on a single evening, with only four players involved. The new format is two semi-final matches consisting of a best-of-one-tiebreak set, followed by a one-set final for the championship.

Naming rights In 2006, Outback Steakhouse became the first sponsor with naming rights of the series.

In October 2011, Invesco QQQ signed a multi-year agreement to become the title sponsor.

Player rankings Top ranked players included:

2008 Jim Courier John McEnroe Todd Martin Wayne Ferreira Aaron Krickstein

2007 Todd Martin Jim Courier Pete Sampras Wayne Ferreira John McEnroe

2006 Jim Courier John McEnroe Todd Martin Wayne Ferreira Magnus Larsson

2008 Events/Results The Oliver Group Champions Cup, March 12–16, 2008 Todd Martin (USA) def. John McEnroe (USA), 6-3,6-1 The Residences at the Ritz-Carlton, Grand Cayman Legends Championship, April 16–20, 2008 Jim Courier (USA) def. Wayne Ferreira (RSA), 7-6(3),7-6(6) Champions Cup Boston, April 30- May 4, 2008 John McEnroe (USA) def. Aaron Krickstein (USA), 5-7,6-3,10-5(TB)

Former international events Champions Cup Athens, held in 2007 in Athens, Greece Stanford Cup held in 2005 and 2006 in Houston, Texas Stanford Championships held in 2006 in Memphis, Tennessee, relocated to Dallas in 2007

2007 Events/Results The Oliver Group Champions Cup, March 7–11, 2007 Wayne Ferreira (RSA) def. Aaron Krickstein (USA), 6-3, 6-3 Champions Cup Boston, May 2–6, 2007 Pete Sampras (USA) def. Todd Martin (USA), 6-3,5-7,11-9(TB) Champions Cup Athens, May 17–20, 2007 Pete Sampras (USA) def. Todd Martin (USA), 6-3,1-6,10-6(TB) The Gibson Guitar Champions Cup, August 22–26, 2007 Todd Martin (USA) def. John McEnroe (USA), 7-5,7-5 The Championships at the Palisades, September 26–30, 2007 Pete Sampras (USA) def. Todd Martin (USA), 6-3,6-4 The Stanford Championships, October 18–21, 2007 Wayne Ferreira (RSA) def. Jim Courier (USA), 2-6,6-3,11-9(TB) The Legends Rock Dubai, November 20–24, 2007 Paul Haarhuis (NED) def. Jim Courier (USA), 6-1, 6-4

2006 Events/Results Champions Cup Naples, March 10–13, 2006 Jim Courier (USA) def. Pat Cash (AUS), 6-4,7-6(8) Champions Cup Boston, April 27–30, 2006 Todd Martin (USA) def. John McEnroe (USA), 6-3,4-6,10-8(TB) The Championships at the Palisades, September 20–24, 2006 Jim Courier (USA) def. Todd Martin (USA), 5-7,7-6(6),10-4(TB) Stanford Championships, October 4–8, 2006 Magnus Larsson (SWE) def. Wayne Ferreira (RSA), 6-3,6-4 Stanford Cup, November 8–12, 2006 Wayne Ferreira (RSA) def. Magnus Larsson (SWE), 7-5,6-3

References

External links Inside Out Sports website