Have ridden many Sr. Olympics.
As stated some folks show up on their old beater others have a bike with $1500 wheels and skinsuits.
The serious one are extremely competitive. They even show up from racing clubs in neighboring states and think us local yokels will be easy pickings..
Some of these clubs use team tactics in the road races; I have been body blocked in a sprint, by a guy about 50 lbs heavier than my skinny 130 lbs, so his other mates could medal.
Have pulled a break away with 3 out of staters jumping on my wheel and then refusing to take a pull at the front. Cured that fast; sprinted away from them and as they tried to jump on my wheel again, I hit both brakes so they had to pull around me, yelling at me. Yup, team tactics can work, however if they want to ride that aggressively, I'll do likewise.
But, if you want to avoid aggressive team tactics, stick to the time trials.
So HiYo, give the Sr. Olympic games a try . . . it's still fun!
Pedal on!
Rudy