Rijo caught his cleats while sliding into second base on a steal attempt in the sixth inning. X-rays at Christ Hospital found a chip fracture on the inside of the right ankle.
Rijo has won five straight decisions and has allowed three earned runs or fewer in 12 of his past 13 starts for a 6-2 record.
* OBITUARY: Frank Umont, who became famous for wearing glasses during the latter part of his 20-year career as an American League umpire, died in Fort Lauderdale, Fla. He was 73.
Umont worked in the AL from 1954 until retiring after the 1973 season. He worked four World Series, four All-Star games and an AL Championship Series.
In 1969, Umont ejected Baltimore Orioles manager Earl Weaver for smoking a cigarette in the dugout before a game. The next day, Weaver brought the Orioles lineup card to home plate with a candy cigarette between his lips.
Umont was a 220-pound tackle for the NFL's New York Giants from 1943-45.
* ANGELS: A 17-year-old Milwaukee girl has filed a civil suit against Luis Polonia and a downtown hotel seeking damages for 1989 sexual encounter for which the outfielder was jailed and fined.
Polonia, 25, pleaded no contest to having sexual intercourse with a minor in August 1989. He was sentenced to 60 days in jail, fined $1,500 and ordered to pay $10,000 to the Sexual Assault Treatment Center in October 1989.
* METS: David Cone felt improvement in the strained pitching shoulder that forced him out of Wednesday night's game in the sixth inning.
"I can tell it's not a deep danger area like the rotator cuff," Cone said. "It can be treated."
The club will push Cone's next start back from Tuesday to Thursday.
* YANKEES: Pascual Perez encountered tightness in the underarm area after 41 warm-up pitches and, therefore, had to call off a simulated game.
Perez had surgery on his upper shoulder area in August.