James Toney at any weight , especially He was unathletic at 175 and 190 too , nothing special in this aspect even at 160 and 168 .
Miguel Cotto - fairly average athleticism for world champion. But very skilled and affective fighter through hard training and experience.
Rios. Hes a kind of tough out of shape guy in general. This all depends on what kind of athleticism you are taking about. Cotto, Rios, Chavez Sr are all STRONG for their size, especially in terms of their punching power. It would be Calderon but he's pretty quick when he wants to be. I think we need a completely average guy with no speed, no power, no flashy style. For me, its LUEVANO!
Marquez is ridiculously atheletic, his speed and combinations early in his career where sick. Power, reflexes, speed, precision. He and Hopkins don't belong in this thread, and Toney at super middle doesn't either.
Riddick Bowe first comes to my mind. From today fighters Povetkin could get a mention, but his skills arent "confirmed" because he keeps fighting nobodies.
precision is skill. the way jmm throws his punches are skill--those tight uppercuts are skill. hopkins is better than 90 percent of fighters because of one skill in particular, the tightness of his punches.
Precision is in some part athletic coordination. Look at Luevano, my earlier example: his combinations are kind of lame, he has no real speed, no power, but he is smart in using the jab, his height, and in throwing combinations that work even though they are not spectacular. Marquez is stronger than most of his opponents, faster, more coordinated. I do think precision is part of athelticism, particularly fine motor coordination. (Maussa is uncoordinated, Madaina is uncoordinated, Cabellero is uncoordinated, but somehow they still win because of other physical attributes).