Yes, the WTA variance is quite high, of course.
I think basketball is one of the least reliable for low probabilities (@<1.1) and Tennis is the safest...
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Men's tennis is going through a transition, which has not yet materialized, at least for specific semi-final and final matches in regular tournaments, but if you look at 2023 for the Grand Slams, you can still have confidence to just in some players.
So with that previous criterion, I think that as a closing bet for a mutibet, if I had to choose between any sport and tennis with the same probability ( @ ) I would make it for tennis. Ah, certain conditions apply. : )
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Why? Because if a bet has an odd bigger 1.00 it means the event has not really be concluded.
If you see some horse racing, even horse at last hurdles can jump badly and falls !!! That's why you can loose or win anytime.
Of course it's "rare" a certain event, this not means that should not happens.
These are not idea to low odds, a low odds could be @1.9, hence,they are + 90% odds to win, that is, to round up, you would lose 1 in 10 times, yeah, given the risk percentage, it means that it is something that It is within the parameters, that is why it is not strange, but it is in the case that playing those odds you find yourself losing many times.
Consequently it leads you to evaluate: the sport, the league, even as someone mentioned if it was pre match or live, since it is out of the average if you make 10 bets of 1.07 and lose half, it is a rarity.