With the completion of this weekend's action, the leading teams and key developments in the major conferences are as follows:

Big 10

Northwestern leads the conference standings at 6-0, sparked by Lauren Delaney's no-hit pitching against Ohio State. Michigan is 7-1, having dropped one of two games against Iowa.

Big 12

Texas A&M (8-0) and Oklahoma (6-0) continue on undefeated in conference play. That won't last too much longer, as the Sooners will visit the Aggies for single games on Saturday, April 12 and Sunday, April 13 (before that, though, the Aggies play Wednesday at Texas, whereas the Sooners host Texas Tech for a double-header on Thursday).

A&M pitcher Amanda Scarborough, out for the season with a foot injury, continues to blog about the Aggies' season.

Pac 10

UCLA (7-0) is off to its best conference start in 15 years, having dispatched of Stanford and Cal this weekend.

Arizona State is also undefeated in league play (5-0), with its final game of the weekend, at Oregon State, suspended due to travel deadlines.

UCLA (ESPN/USA Softball) and ASU (USA Today/NFCA) are each No. 1 in a national poll (see rankings in the links section to the right). We should have a consensus on the top team soon, however, as the Bruins face the Sun Devils Friday night, April 11, in Tempe.

Arizona is 4-2 in conference play, having lost this afternoon at Oregon.

SEC

Florida leads the Eastern Division at 15-1, whereas Alabama leads the Western Division at 15-2. The Crimson Tide, ranked No. 2/3 nationally (depending on which poll), swept a three-game series from No. 10/11 LSU this weekend.

For further details, see the official conference and team pages in the links section.