Karlovic is a tiebreak-machine - from his last 10 matches, 7 ended up in TB , from the last 20, 17 ended up in TB
Querrey is not that good in this discipline, but still above-average - 4/10 and 11/20
Both of their two last meetings have seen a TB
the odds are @ 1.5 atm for Ivo vs Querrey having at least one TB
Seems like a good value to me, cos I can't see Ivo breaking querrey and vice versa as querrey is struggling a bit the last couple of weeks.
The only prob imho is that the courts are a bit slow, but still seems like a good value