As he is characterized in Ernest Thayer's poem, Casey (DeWolf Hopper) in this film was a "mighty"
baseball player, the star and leading hitter of the town of Mudville's team. The motion picture's storyline, however, as described in 1916 reviews and news items, expanded considerably on Casey's personal life outside of baseball. He is portrayed living at the house of his sister (Kate Toncray) and brother-in-law (Bert Hadley) and working as a clerk and "errand boy" at
Hicks' General Store in Mudville. Although he is a baseball hero in his community, Casey away from the playing field has few friends or admirers due to his clumsy, coarse behavior. Only a "half-witted" man (Frank Hughes) and the town's little children like the giant-sized athlete. Among the latter is Casey's six-year-old niece (
Mae Giraci) to whom he is deeply devoted. Despite his unattractive appearance and social ineptness, Casey is infatuated with a pretty, young woman in town, Angevine Blodgett (Marguerite Marsh). She is the daughter of the local judge, is cordial to Casey whenever she sees him at the general store or elsewhere in public, but she is in love with Bert Collins (Frank Bennett), a handsome "college man" she hopes to marry. Collins is also a skillful pitcher on the baseball team of Mudville's bitter sports rival, Frogtown. Central to the film's story is a three-game series of baseball contests between Mudville and Frogtown. Mudville wins the first game thanks to Casey's hitting and fielding, but Frogtown wins the next one because Casey is unable to play due to burning his hands while preventing a fire at a community dance. By the time Mudville hosts the decisive third game against Frogtown, Casey is sufficiently healed to play. Unfortunately, his niece is seriously injured that same day when she falls out of a tree. Refusing to leave her bedside as she is being treated by the town doctor (
Hal Wilson), Casey misses the start of the game. Later he hears townfolk calling for him, so he finally decides he must play and instructs his friend to stay with the girl. When Casey arrives at the ballpark, the game is in the bottom half of the ninth inning and Mudville has two men on base, trails by two runs, and is only one out from losing the series. Casey now steps into the batter's box, and the crowd's excitement grows, for the partisan spectators are confident the game will now be won by their
home-run hero. Casey allows Frogtown's pitcher to throw two strikes against him, but just as the third pitch is being thrown, the slugger suddenly sees his friend arrive in the ballpark. Thinking he has come to the game with bad news about his niece, a distracted Casey swings and misses the pitch, striking out. After the game Casey is relieved to learn that the girl is better and will recover. Mudville's residents, angry about the loss, blame and shun their former hero. Humiliated and dejected, Casey returns to his sister's house, bundles up his few possessions, and then walks out of town along the railroad tracks, leaving Mudville forever. of Casey (Hopper) talking to Angevine (Marguerite Marsh) in Hicks' General Store in Mudville ==Cast==