Gary Plummer was a linebacker on the San Diego Chargers in the early-90s, patrolling the middle with Junior Seau. (Plummer also played with the 49ers and won a Super Bowl).) The two were friends, and Seau’s suicide last week hit Plummer hard. Here’s what Plummer told Cam Inman of the San Jose Mercury News about concussions and football:

“In the 1990s, I did a concussion seminar. They said a Grade 3 concussion meant you were knocked out, and a Grade 1 meant you were seeing stars after a hit, which made me burst out in laughter. As a middle linebacker in the NFL, if you don’t have five of these (Grade 1 effects) each game, you were inactive the next game.

“Junior played for 20 years. That’s five concussions a game, easily. How many in his career then? That’s over 1,500 concussions. I know that’s startling, but I know it’s true. I had over 1,000 in my 15 years. I felt the effects of it. I felt depression going on throughout my divorce. Junior went through it with his divorce.”

Seau’s family initially said they would let his brain be examined, but now they seem to be reconsidering. [Mercury News]

Previously: Would you let your kids play football?