A second death was reported Monday from Los Alamitos’ weekend race card, bringing the number horses to die from racing or training injuries at the Cypress track this year to 18.

Lady Derby, who finished in either sixth or seventh place in all six of her career races, collapsed and died after Friday’s seventh race.

“The 6-year-old mare collapsed while cooling out after the race. Termed a sudden death,” California Horse Racing Board spokesman Mike Marten told City News Service on Monday.

The official race chart says she “broke in and bumped, raced in range three to four wide on the first turn, chased between then two wide on the second bend and tired.”

Over the weekend, state horse racing officials also reported the death of Give Me the Lute.