Las Vegan Kris Bryant fires up Cubs with grand slam — VIDEO

CHICAGO — Las Vegan Kris Bryant provided the holiday fireworks with two home runs — including his first Wrigley Field grand slam — to lead the Chicago Cubs to a 7-2 victory over the Miami Marlins on Saturday.

The rookie third baseman also collected six RBIs in the opening two innings as Chicago (43-36) chased Miami starter Jarred Cosart after just 1 2/3 innings.

Cubs left-handed starter Clayton Richard, acquired late Friday in a cash deal with the Pittsburgh Pirates, allowed two earned runs on eight hits in his Chicago debut.

Richard, making his first big league appearance since June 21, 2013, also struck out four and walked just one.

The victory evened the three-game weekend series at one game apiece entering Sunday’s finale.

The Marlins (35-47) scored once in the third and added another in the seventh when shortstop Andy Hechavarria doubled home second baseman Dee Gordon.

Richard departed after that, but received a rousing ovation for his for his 6 1/3 inning debut effort.

In the Cubs seventh, second baseman Addison Russell lined a foul down the third-base line, which knocked down third base coach Gary Jones, who remained face down on the grass for a couple of minutes.

A replay showed Jones tried to get out of the way. He remained in the game.

Bryant’s two-run home run in the first was his 11th of the season and reached the back row of the expanded left-field bleachers at Wrigley.

The blast also drove in leadoff better Dexter Fowler, who doubled and reached third on a fielder’s choice.

Cosart struggled in the second when he walked Fowler with bases loaded with one out to bring home left fielder Chris Coghlan for a 3-0 Cubs’ lead.

First baseman Anthony Rizzo struck out looking, setting the stage for Bryant’s second shot to left and his second career grand slam.

Bryant lined a 3-and-1 pitch into the bleachers for his 12th home run of the season and brought home right fielder Chris Denorfia, Russell and Fowler.

Trailing 7-0, Cosart departed after pitching only 1 2/3 innings. He allowed four hits, seven earned runs while walking four and striking out two.

Miami loaded the bases in the third and got one run back when second baseman Lee Gordon scored from third on an error.

Richard was called up for Saturday’s game and inserted as starter. He is the 2,000th player all-time to appear in a Cubs uniform.

NOTES: Miami’s trips to Fenway Park and Wrigley Field make the Marlins the first team with back-to-back stops at baseball’s oldest parks since the Brewers in 2011. … Marlins RHP A.J. Ramos has converted 13-of-14 save opportunities since moving into a closer role on May 13. He posted the save in Friday’s 2-1 win over the Cubs. … Miami sends RHP Mat Latos (3-5, 5.27 ERA) against Chicago RHP Kyle Hendricks in Sunday’s series finale. … The Cubs announced a series of roster moves starting with the Friday acquisition of LHP Clayton Richard from Pittsburgh for cash, then activated him and gave him Saturday’s start. He was 4-2 with a 2.09 ERA in nine starts for Triple-A Indianapolis. … LHP Donn Roach, Saturday’s originally scheduled starter, was optioned to Triple-A Iowa. To make room on the 40-man roster, INF Tommy La Stella was transferred to the 60-day disabled list (right rib cage inflammation) and RHP Gonzalez Germen was designated for assignment. … Chicago also activated C Taylor Teagarden from Triple-A Iowa and placed C David Ross on the seven-day concussion disabled list retroactive to July 2.