Live tennis betting has the craziest line movement

[Rich Boy]

I am no tennis expert, but I have been looking for opportunities with live betting at different books

So far today I have seen a -20000 favorite lose (Sarah Gronert)

And now a +1800 dog moves to -125 in minutes (Ferrer/Lopez)

Anyone know about live tennis betting. Is this usual?

If so, could be some very easy hedging opportunities on the same match