BIG TEST

The Cubs are sending star slugger Anthony Rizzo for an MRI after he sprained his right ankle Sunday, hoping the first baseman can still help with their postseason push. Rizzo was injured fielding a bunt at first base in the third inning during a 16-6 win over Pittsburgh. He had to be helped off the field and could not put pressure on the leg. X-rays taken at Wrigley Field showed no fractures, but Chicago will get a clearer prognosis from the MRI. Chicago’s postseason pursuit has already been hindered by an injury to shortstop Javier Báez, who is out for the rest of the regular season with a hairline fracture of his left thumb.

SEEING RED

Eugenio Suárez takes aim at the major league home run lead as the Reds open a series at Wrigley Field. Suárez connected twice Sunday and has 47 for the season, tying him with Mets slugger Pete Alonso for best in the majors. The 28-year-old Suárez has eight homers this month. The last Cincinnati hitter to lead the majors in home runs was George Foster, who hit 52 in 1977.

DOING IT ALL

Jacob deGrom (8-7, 2.56 ERA) tries to stop the Mets’ five-game skid when he faces Cubs lefty Jon Lester (10-9, 4.49) in a series finale between playoff hopefuls at Citi Field. Last year’s NL Cy Young Award winner, deGrom has pitched himself right back into contention this season and leads the league with 207 strikeouts. He fanned 13 over seven innings and homered last time out but the Mets lost 2-1 to Atlanta in 14 innings. The right-hander is the first pitcher since at least 1900 to homer and strike out 13 or more in the same game twice in one season.

BUMP IN THE ROAD

Major league ERA leader Hyun-Jin Ryu (12-4) looks to rebound from a rough outing when he pitches for the NL West-leading Dodgers at Arizona. The All-Star lefty gave up a grand slam to Didi Gregorius last Friday and was tagged by the New York Yankees for a career high-tying seven runs and nine hits in 4 1/3 innings — his shortest outing since June 28. It was Ryu’s second consecutive loss, and his ERA jumped from 1.64 to 2.00.