Chasing a target of 274 run, Saurashtra lost the plot from the beginning and bundled out for 195 runs.
This is the hosts second defeat in three outings.
Saurashtra strated their second innings at the overnight score of 127 for five, and were all out for 195 in the first sesson.
Experienced Sitanshu Kotak who was unbeaten on 57, could add only one run to his individual score before edging one to wicket keeper M S K Prasad off D K Krishna.
The only other notable contribution came from Rakesh Dhruve, who played some beautiful shots in his 36 runs, smashing seven fours before he was dismissed by D K Krishna.
Medium pacers - D Kalyan Krishna and K S Shabuddin - virtually broke the backbone of the Saurashtra's top order, as they snapped up three and two wickets respectively by conceding 47 and 48 runs.
Venu Gopal Rao and Md Faiq took two wickets each, giving away 30 and 32 runs respectively.
The hosts did not have decent season with the bat as they lost two points to Uttar Pradesh after conceding the first innings lead, while playing in Knapur in the opening match and in second match, they were defeated by Baroda here recently. Worse still, Saurashtra could not take advantage of home pitch and lost to Andhra Pradesh.
Now, Saurashtra will clash against Tamil Nadu here from Dec 17.
Andhra Pradesh 215 and 145 beat Saurashtra 87 and 195 (Sitanshu Kotak 58, R Dhruve 36, K Vaghela 22; Shabuddin 2 for 48, Kalyan Krishna 3 for 47, Venu 2 for 30 and Md Faiq 2 for 32)