[M T]

Do I read this correctly that we and USC have played 7 games, whereas UCLA has played 15?    If so, is there some tournament(s) that have given them that many more?

The records I gave were from each team's site's schedule page.  I did a double take on that number as well.

All teams started the weekend of 17-Jan, meaning there have been 4 weekends of play.
UCLA played 5 matches over that first Fri-Sat-Sun, 4 the next Sat-Sun, 2 the next Fri-Sat, and 4 the next Sat-Sun (this past weekend).
Stanford played 2 matches that first Sat, 3 the next Sat-Sun, 3 the next Sat-Sun, and none the past weekend.

The NCAA has (complicated) limits on how much time a sport can require an athlete to participate per week.   I'm a little surprised that 5 matches can be played on a weekend and still fit under those limits, unless they reduced countable hours during the week (beyond the day-off per week).  5 matches would seem to require (at least) 8 hours out of the limit of 20 per week.   It seems UCLA has already used 9 of its 21 competition days while Stanford has only used 5.

The rankings have not yet been updated this week as I type this.  Probably will be posted on Wednesday (polling apparently happens after Monday noon EST, and bears Monday's date).

[M T]

Do I read this correctly that we and USC have played 7 games, whereas UCLA has played 15?    If so, is there some tournament(s) that have given them that many more?

The records I gave were from each team's site's schedule page.  I did a double take on that number as well.

All teams started the weekend of 17-Jan, meaning there have been 4 weekends of play.
UCLA played 5 matches over that first Fri-Sat-Sun, 4 the next Sat-Sun, 2 the next Fri-Sat, and 4 the next Sat-Sun (this past weekend).
Stanford played 2 matches that first Sat, 3 the next Sat-Sun, 3 the next Sat-Sun, and none the past weekend.

The NCAA has (complicated) limits on how much time a sport can require an athlete to participate per week.   I'm a little surprised that 5 matches can be played on a weekend and still fit under those limits, unless they reduced countable hours during the week (beyond the day-off per week).  5 matches would seem to require (at least) 8 hours out of the limit of 20 per week.   It seems UCLA has already used 9 of its 21 competition days while Stanford has only used 5.

The rankings have not yet been updated this week as I type this.  Probably will be posted on Wednesday (polling apparently happens after Monday noon EST, and bears Monday's date).