TCU (14-18, 3-6 Big 12) lost its fifth series this season after losing the third game  in its series Sunday against the San Francisco Dons, 4-3.

TCU fell apart in the ninth inning, after going into the final frame with a 3-2 lead. After a base hit and a TCU error, the Dons tied the game with single from Bradley Zimmer.

It set up a run-down situation in which the Frogs tagged the runner out between first and second, but allowed the runner from third to score to go-ahead run.

TCU head coach Jim Schlossnagle said that his players should not have let the runner score in that situation, but he said he would not answer any more questions about the play.

Schlossnagle said his team “played hard, played aggressive (and) hit a lot of balls hard,” but “didn’t play well enough to win.”

The game was scoreless until the third when TCU put the first run on the board. TCU sophomore shortstop Keaton Jones got on with a lead-off walk and moved to second on a sacrifice. After a throwing error from San Francisco second baseman Jason Mahood on an attempted double-play ball, Jones scored to give the Frogs a 1-0 lead.

TCU starter Andrew Mitchell got out of a one-out bases-loaded situation in the first by striking out the final two batters of the inning.

The righty stayed in for four-plus innings and allowed two hits and two runs (one earned). He issued two walks and struck out a season-high nine batters.

After some relief from Alex Young, right-hander Riley Ferrell came in during the eighth inning for TCU and found himself in a bases-loaded situation after the first three batters he faced. He was able to get a strikeout and a grounder to end the inning, leaving all three runners stranded.

During his time on the mound, Ferrell allowed two runs (one earned) on three hits, walking one and striking out one batter.

Senior right-hander Justin Scharf came in for the final three outs of the game.

San Francisco pitchers Christian Cecilio, Adam Cimber and Bob Mott allowed a combined three runs on seven hits. They walked three and struck out nine.

Mott (1-1), who allowed one hit and struck out one got the win for the Dons. Ferrell (0-2) was credited with the loss.

The Horned Frogs continue their homestand Wednesday as the Stephen F. Austin Lumberjacks travel to Lupton Stadium.

First pitch is scheduled for 6:30 p.m.