Yeah and the really bad thing about that is, when your are a newbie that wasted lvl is quiet a hard chunk to take. :(
I even considered to kick Gabriel out of the team and look for another Blitzer and start fresh on that one.
One use for a wrestler Blitzer would be to use him to tie up a really dangerous opponent. A good example would be a Bull Centuar from the Chaos Dwarves. Use the wrestling Blitzer to stay near the Centaur as much as possible and continually take him down. BC have great movement, strength, and everything, but they don't have block or dodge at start. Wrestling's more of a tie up/annoy skill, but it has it uses. If the opponent has a Big Guy who has a negative to getting up (virtually all of them), you could suicide into them with Wrestle, take them down, and potentially eliminate them from the entire half when they can't get back up.
Another option would be to get him leveled up and take Tackle. Then he's a really dangerous opponent for anyone with Dodge or Stunty, which happens to be several of the stronger teams in the league. It completely negates their main offensive abilities with characters like Goblins, Snotlings, Skinks, or even my Halflings (Not that you need help with them). Because any character with Dodge + Stunty has the negative of being really, really fragile. With Tackle, you can take them out hard and fast, while Wrestle is mostly to contain the issue.
In general though, Block + Dodge is an incredible combination and any team with fast blitzing types (such as Amazon, Humans, Dark Elves, Norse, etc, etc) should probably aim for. Instead of a roll against them being a three out of six (Both Down, Defender Stumbles, Defender Down), it turns it into a one out of six (Defender Down), making whoever has "Bloge" an incredibly durable, tough, and annoying as hell opponent.