Mayweather vs. Berto: What the numbers say

Floyd Mayweather and Andre Berto will compete for the WBC and WBA welterweight belts. Mark Ralston/AFP/Getty Images

Floyd Mayweather (48-0, 26 KOs) will put his WBA and WBC welterweight titles on the line against Andre Berto (30-3, 23 KOs) on Saturday at the MGM Grand in Las Vegas. Mayweather is defending his WBC title for the fifth time and his WBA title for the third time.

Mayweather is the top-ranked fighter in the welterweight division and ESPN’s pound-for-pound lists. Two of his past four fights were won by majority decision. He has not had a win by stoppage in his six fights since his knockout of Victor Ortiz in 2011.

Berto is unranked in the welterweight division by ESPN. He is making his first world title fight since a fifth-round TKO win in 2011 over Jan Zaveck. Berto is 7-1 (four KOs) in championship fights.

Dominant in the ring

Mayweather ranks at or near the top in almost every statistical category CompuBox tracks. He tops the rankings in plus/minus rating (plus-24), total connect percentage (43 percent) and power-punch percentage (50 percentage) and is tied for second in opponent connect percentage (19 percent).

Although Berto’s rankings are far lower, his connect percentage in his past seven fights is 37 percent.

Mayweather’s ability to control a fight is as rare as it is impressive. According to CompuBox, he throws 39 punches per round, second-fewest in CompuBox’s rankings. He lands a higher percentage of punches, however, than any of his opponents.

Berto lands 11 power punches per round and 46 percent of all power punches thrown, according to CompuBox.

Inconsistency after undefeated start

Berto began his career with 26 wins before he lost to Ortiz in 2011. Berto is 3-3 in his past six fights (including one knockout loss, to Jesus Soto Karass), which have been characterized by inconsistency.

In five of the fights, Berto was outlanded by his opponent. In his three most recent wins, Berto outlanded his opponents by an average of 129-98; in his three most recent losses, he was outlanded on average 310-184.

In 39 pro fights tracked by CompuBox, Mayweather has been outlanded once, in 2002 by Jose Luis Castillo (203-157).

Chasing Marciano

If Mayweather defeats Berto and then retires, he will match former heavyweight champion Rocky Marciano’s record of 49 wins and no losses or draws.

Marciano was 31 years old when he retired, in the prime of his career, after defeating Archie Moore in 1955. Mayweather, 38, has not shown signs of rust.

Other than their career records, the fighters don’t share many statistical similarities, as the chart shows.