Scott Miller

Think about this for a minute:

It took Ken Griffey Jr. a total of 1,722 at-bats to move from career homer No. 500 to career homer 600, which he slugged on Monday night in Florida.

It took Barry Bonds only 710 at-bats to cover the same distance from 500 to 600.

Each man hit No. 600 when he was 38.

Think there was a level playing field?

Granted, Griffey has had his share of injuries, which is why nearly four years elapsed between No. 500, struck on June 20, 2004, and 600. He missed the second half of the 2004 season with a torn hamstring, and he missed nearly a month of the 2006 season with a strained knee.

It took Bonds barely more than one year to move from 500 to 600 -- from April 17, 2001, to Aug. 9, 2002.

The years can be skewed. Say one player stays healthy and the other is injury-plagued -- well, of course it will take longer for the player battling the disabled list.

But at-bats are a pretty good barometer.

I knew Bonds moved along at a breakneck clip in the early 2000s. But when I contacted home run guru David Vincent, who tracks homers for the Society for American Baseball Research and is the country's premier expert on the subject, even I was stunned.

The fact that it took Griffey roughly 1,000 more at-bats than Bonds to move from 500 to 600 is staggering. Even suspecting what most of us suspect about Bonds and the Steroid Era.

A junkie (home runs, not human growth hormone) could spend hours poring over Vincent's fascinating spreadsheets.

A handful of other relative home run numbers gleaned from Vincent's numbers:

Of the six members of the 600-homer club, nobody was even remotely as quick as Bonds in moving from No. 500 to 600. It took Babe Ruth 1,120 at-bats to do so, Sammy Sosa 1,605, Hank Aaron 1,402 and Willie Mays 1,981.

Time-wise, it took Ruth barely more than two years (Aug. 11, 1929, to Aug. 21, 1931) to go from 500 to 600, Aaron a little less than three years (July 14, 1968, to April 27, 1971), Mays nearly four years on the nose (Sept. 13, 1965, to Sept. 22, 1969) and Sosa a little more than four years (April 4, 2003, to June 20, 2007).

Of course, Sosa was out of the game in 2006 -- partly for reasons beyond suspicious -- else he would have gotten there more quickly.

Bonds finished -- if he is indeed finished -- with 762 home runs in 9,847 at-bats.

Griffey currently is at 600 in 9,045 at-bats. And had he not lost an estimated 450 games to the disabled list from the time he arrived in Cincinnati in 2000 through 2005, his number today undoubtedly would be far higher than 600.

Probably not as high as 762.

But at least Griffey almost certainly can look himself in the mirror today and know he is the first clean guy to join the 600 club since Aaron in 1971.

In a statistics-driven game that is still wiping the steroids muck off of the record book, some things are more important than the raw numbers.