SARATOGA SPRINGS, N.Y.--At the end of Sunday's fourth race--the GIII, $225,000 Prioress, jockey Manny Franco let loose. The 31-year-old from Puerto Rico had just won the six-furlong race for 3-year-old fillies easily as Mashallah, the 2-5 favorite, won by five lengths. When Franco and Mashallah, trained by Brendan Walsh, cruised past the finish line, he stood up, then pumped his right fist. Then, for emphasis, he did it again. Why not? With the victory, Franco clinched his first riding title at Saratoga. The Prioress was his 68th win of the...