ɪn tˈuː θˈaʊzənd θɹˈiː, kælˈæspoʊ lˈɛd ðə mɪdwˈɛst lˈiːɡ wɪð ˈeɪ .θɹˈiːhˈʌndɹɪd twˈɛnti sˈɛvən ˈævɹɪdʒ ænd θˈɜːɾi ˈeɪt dˈʌbəlz wɪððə sˈiːdɚ ɹˈæpɪdz kˈɜːnəlz.
In 2003, Callaspo led the Midwest League with a .327 average and 38 doubles with the Cedar Rapids Kernels.