It was obvious within the first five minutes.
Balls weren’t bouncing where they should.
No one could volley, or rally, or serve.
This tennis lesson was a disaster.
Everyone looked dejected. What was going on?
Our coach found it funny at first, but quickly lost his temper. He’d stop us, wave his arms about, gesturing wildly. “Guys. Gentle. We want to keep the ball in, yes?” We’d listen and nod solemnly and then go right back to what we were doing, which was, playing terribly.
I know what it feels like to lose your mojo, but I guess this is what it feels like when a group loses it. Even I was getting worse and there was nothing I could do about it. I started to blame the other players, but that only worked for a while. I was missing easy shots. I couldn’t hide. I had no excuses.
I looked around. I felt like I could notice the level deteriorate in real-time. There was something different that night. There was a new player who had joined the lesson. We can call him R. R hadn’t been playing tennis at the club for all of winter, and I suppose with the first hint of a balmy night he had decided to get back into the swing of things.
R was rusty from the get go. He was impatient. Irritable. He hit the ball with venom, but had no control. Once you get to a certain level of tennis, you can’t help but try and sniff out other players’ weak spots. If someone’s backhand is leaking free points, it’s like there’s a giant neon arrow hovering over that side of the court. The worse he hit, the more we hit to him.
That explains why he was playing badly, but why the rest of the group?
I wonder if any group of people (children in a classroom, firefighters, airline attendants) quickly build up an implicit understanding of each other. Even if there’s not much of a relationship or even friendship, you just start to know each other.
With tennis, you’re picking up stroke style, movement, strengths, weaknesses, but also personality, temperament and probably a 100 other little things. Over time, even the loosest groups build familiarity, ease and cohesion just by knocking around the same 4 or 5 square meters.
When someone like R enters the mix, playing really bad tennis, the group can’t help but get disrupted. It’s like a large rock getting chucked into a quietly flowing stream. It takes a second for the group to realize there’s a new element, re-route and build up an invisible bond again.
Something as insignificant and fleeting as a grumpy mood can end up have a bigger influence than you think. And although we all like to think we are in control of our own behavior, when we are part of a group, we are often behaving as one unit – for better or worse.

