Kammala wannan jumla: Masu direbobi biyu, dukansu biyu masu nasara ne, suna da sunayensu daban-daban a cikin shekaru daban-daban. Al Unser, Sr. mai nasara sau hudu yana da sunansa a matsayin "Al Unser" saboda kamanninsa na
1970, 1971, da kuma 1978. An lasafta shi a matsayin "Al Unser Sr". don nasararsa ta 1987, saboda gaskiyar cewa dansa (mai nasara sau biyu Al Unser, Jr.) ya zama direba. Mai nasara sau biyu Juan Pablo Montoya an jera shi a matsayin "Juan Montoya" don 2000 kuma a matsayin "Juan Pablo Montoya" don 2015.