This baseball was signed on the sweet spot with a blue ball point ink pen and comes with a Certificate of Authenticity from South Central Autographs.  Mr. Cahill added "18-8, 2.97 ERA" to commemorate his 2010 season stats for the Oakland A's.  Pictured is the actual baseball you will receive.  All of our items are 100% authentic.  We have been in the sports memorabilia business for over 10 years, so bid with confidence.

Kentucky residents will be charged 6 % sales tax.