Tom Brady put together a regular season for the ages: an NFL-record 50 touchdown passes (he threw 50 in 2005 and 2006 combined) to go along with a 16-0 record in the regular season. That's about as close to perfection as it gets, and one of the single greatest seasons an individual has ever had in a team sport.
But what about those individuals in individual sports? Steffi Graf's 1988 "Golden Slam" and Martina Navratilova's 1984 campaign made Page 2's Top 25 greatest individual seasons. Here's ESPN.com's top 10 individual tennis seasons in the Open era (since 1968).
1. 1988 Steffi Graf
She won the Golden Slam (all four majors plus Olympic gold). Granted, opportunities come around only once every four years to pull that off, but Graf remains the only player -- male or female -- to accomplish the feat.
2. 1984 Martina Navratilova
Where to begin? Three Grand Slam singles titles and an Open era-record 74 straight match wins. She also combined with Pam Shriver to win all four Slam titles in doubles.
3. 1969 Rod Laver
The only men's player in the Open era to win the season Grand Slam. Enough said.
4. 1983 Martina Navratilova
Three Slam titles to go along with the single-season win percentage mark (.989, 86-1), a record that still stands today.
5. 1970 Margaret Court
Before Graf there was Court, the first woman to win the season Grand Slam in the Open era.
6. 1974 Jimmy Connors
A record of 99-4 and 14 titles in 20 events. Connors won the Australian Open, Wimbledon and U.S. Open. He didn't have a chance to win all four Slams because he was banned by the French Open after he had signed a contract to play World Team Tennis. He took over the No. 1 ranking in July 1974 and held it 160 straight weeks.
7. 2006 Roger Federer
What didn't he do?
He didn't win all four Grand Slams (losing the French Open), but Federer became the first player since Rod Laver in 1969 to reach the final in all four Grand Slams. He went 92-5 and won 12 titles (including three Slams), becoming the first player in the Open era with double-digit titles in three consecutive years.
8. 1984 John McEnroe
His win percentage of .965 (82-3, Wimbledon, U.S. Open titles) remains the best single-season record on the men's tour in the Open era.
9. 2002 Serena Williams
She twisted her ankle in Sydney, Australia, and missed the year's first Grand Slam. When she returned, Serena won eight of the 12 events she entered including all three Grand Slams -- beating older sister Venus in straight sets at the French Open, Wimbledon and U.S. Open. The 2002 season remains the only time Serena finished the year No. 1.
10. 1988 Mats Wilander
Lost in Graf's spectacular '88 season was the fact that Wilander won three of four Slams. Wilander, Federer and Laver are the only men to win at least three Grand Slams in a season.
Keith Hawkins is the tennis editor for ESPN.com.