Head-to-head
Pick any two dogs from the same or different breeds.
Rollin South
Border Collie · Dog
Lifetime avg
27.65
Rank #186
Best year
27.65
2026
Breed top %
18%
of 2750
Years active
2
2025–2026
Best rank
#48
in breed
Speed trend
+1.17
mph first→latest
Dog B