1) Williams has beaten Errani in all six of their previous meetings.
Errani did take a set in one of those meetings, but apart from that Williams has lost only 23 games in 12 sets (an average of about two games per set). And this is what happened in their last meeting.
2) Williams is trying to become the first player to win three WTA titles this year.
Right now, Williams is in a four-way tie for most WTA titles on the year so far:
Ana Ivanovic - 2 (Auckland, Monterrey)
Li Na - 2 (Shenzhen, Australian Open)
Maria Sharapova - 2 (Stuttgart, Madrid)
Serena Williams - 2 (Brisbane, Miami)
3) Williams is going for the milestone 60th WTA title of her career.
Williams is currently in seventh place on the all-time list of WTA titles, and whether or not she wins this title today, she will stay in seventh place. But who's she creeping up on? Here's the Top 10:
1. Martina Navratilova - 167
2. Chris Evert - 154
3. Steffi Graf - 107
4. Margaret Court - 92
5. Evonne Goolagong Cawley - 68
6. Billie Jean King - 67
7. Serena Williams - 59
8T. Virginia Wade - 55
8T. Lindsay Davenport - 55
10. Monica Seles - 53
4) Serena is almost unstoppable on clay in the last three years.
Since the beginning of the 2012 clay court season - and actually since coming back from her year-long injury and illness lay-off in mid-2011 - Williams is a ridiculous 52-2 on clay. Here's the breakdown:
2012 Charleston (5-0... Won)
2012 Fed Cup (2-0)
2012 Madrid (6-0... Won)
2012 Rome (4-0... withdrew prior to SF match)
2012 French Open (0-1... fell to Virginie Razzano first round)
2013 Charleston (5-0... Won)
2013 Madrid (6-0... Won)
2013 Rome (5-0... Won)
2013 French Open (7-0... Won)
2013 Bastad (5-0... Won)
2014 Charleston (0-1... fell to Jana Cepelova second round after first round bye)
2014 Madrid (3-0... withdrew prior to QF match)
2014 Rome (4-0 so far...)
5) Errani is the first Italian to reach the Rome final since before she was born.
The last time an Italian woman reached the final of the Internazionali BNL d'Italia was way back in 1985 - Raffaella Reggi achieved the feat that year (and she won the title, too).
6) This is the second time Errani has beaten two Top 10 players at the same tournament.
With wins over World No.2 Li Na and World No.8 Jelena Jankovic the last two rounds, this is the second time Errani has beaten two Top 10 players at the same tournament. The first time was at the French Open in 2012 - she beat then-No.10 Angelique Kerber and then-No.6 Sam Stosur.
7) Errani is 0-6 against World No.1s.
Errani is trying to become the fifth Italian to beat a World No.1 - here are the first four:
Tathiana Garbin (d. Henin at 2004 French Open)
Francesca Schiavone (d. Mauresmo at 2006 Fed Cup & Henin at 2008 Dubai)
Flavia Pennetta (d. Jankovic at 2008 Zürich & Wozniacki at 2011 Beijing)
Roberta Vinci (d. Wozniacki at 2011 Toronto)
8) This would be the biggest title of Errani's career.
Errani's seven WTA titles have all come at International-level events, so this Premier-level title would be her biggest. She's been to some big finals before though - obviously the French Open final in 2012, as well as other Premier-level finals at Paris and Dubai in 2013, and Paris again this year.
9) Errani is going for the singles-doubles sweep.
Errani has pulled off singles-doubles sweeps three times before, at Palermo in 2008 (winning the doubles with Nuria Llagostera Vives) and at Acapulco and Barcelona in 2012 (winning both doubles titles with Roberta Vinci). But nobody has had a singles-doubles sweep at a WTA event bigger than at the International-level since the London Olympics in the summer of 2012 (Serena Williams).
10) Go to WTA TV developed by Xerox to find out where you can watch the final on TV!