It was a volatile first weekend at the top of the rankings, as the two teams tied at No. 1 each lost two of three games.

Vanderbilt lost to Michigan and Cal Poly at the MLB4 Tournament and Louisville lost a series at Ole Miss. That led to them dropping to No. 3 and No. 4, respectively, in the HawgBeat Composite Poll, which combines the major college baseball polls.

Meanwhile, Arkansas took care of business with a sweep of Eastern Illinois to maintain its ranking in the polls by Perfect Game (No. 4), the NCBWA (No. 6), D1Baseball (No. 7), Collegiate Baseball (No. 9) and Baseball American (No. 11).

The Razorbacks did, however, fall two spots from a tie at No. 6 to No. 8 in the Composite Poll. The slip is because of movement around them, plus the USA Today Coaches Poll - which has them at No. 5 - is not factored in this week because it doesn't update until after the third week of the regular season.

Much like the preseason, this week's poll is dominated by the SEC and ACC. The SEC leads the way with nine total teams - including six in the top 10 - but is followed closely by the ACC's eight teams - including the new No. 1, Miami (Fla.).

Here are a few other tidbits about this week's Composite Poll:

~There are four different No. 1 teams in the five rankings used in this week's composite: Michigan (Baseball America), Texas Tech (Collegiate Baseball, NCBWA), Miami (D1Baseball) and Louisville (Perfect Game).

~The Red Raiders are the only team at No. 1 in multiple polls, but aren't No. 1 in the composite because they are No. 6 on D1Baseball. The five-spot differential between them and Miami (Fla.) in that poll is huge considering just one point separates them at the top of the composite.

~Oklahoma State, which lost a series at Grand Canyon, was the only team to drop out of the top 25. It was replaced by Arizona, which moved from the receiving votes section up to No. 24.

~Most of the teams that moved one or two spots - like Arkansas - did so because the USA Today Coaches Poll dropped out of the composite this week.

~Thanks to its series win over Louisville, Ole Miss made the biggest jump: up nine spots to No. 16. Michigan also saw a pretty big jump (six spots to No. 6) after beating Vanderbilt, Arizona State and Cal Poly at the MLB4 Tournament.

~Outside of Oklahoma State - which fell from No. 18 to the third team receiving votes - the team that fell the furthest was Stanford. It dropped six spots to No. 25 after losing a home series to Cal State-Fullerton. Arizona State fell five spots into a tie at No. 11 with losses to Villanova and Michigan.

Here is a rundown of the entire updated composite poll, complete with each team's highest and lowest composite ranking of the season (SEC teams in bold, Arkansas opponents in italics)...