Answer by taking a quote from the following article:

Jay Hanna "Dizzy" Dean (January 16, 1910 - July 17, 1974), also known as Jerome Herman Dean, was an American professional baseball player. He played in Major League Baseball as a pitcher for the St. Louis Cardinals, Chicago Cubs and the St. Louis Browns. A brash and colorful personality, Dean was the last National League pitcher to win 30 games in one season.

While pitching for the NL in the 1937 All-Star Game, Dean faced Earl Averill of the American League Cleveland Indians. Averill hit a line drive back at the mound, hitting Dean on the foot. Told that his big toe was fractured, Dean responded, "Fractured, hell, the damn thing's broken!" Coming back too soon from the injury, Dean changed his pitching motion to avoid landing as hard on his sore toe enough to affect his mechanics. As a result, he hurt his arm, losing his great fastball.  By 1938, Dean's arm was largely gone. Chicago Cubs scout Clarence "Pants" Rowland was tasked with the unenviable job of obeying owner P. K. Wrigley's direct order to buy a washed-up Dizzy Dean's contract at any cost. Rowland signed the ragged righty for $185,000, one of the most expensive loss-leader contracts in baseball history. Dean helped the Cubs win the 1938 National League pennant. The Cubs had been in third place, six games behind the first place Pittsburgh Pirates led by Pie Traynor. By September 27, with one week left in the season, the Cubs had battled back to within a game and a half game of the Pirates in the National League standings as the two teams met for a crucial three-game series.  Dean pitched the opening game of the series and with an ailing arm, relied more on his experience and grit to defeat the Pirates by a score of 2 to 1. Dean would later call it the greatest outing of his career. The victory cut the Pirates' lead to a half game and, set the stage for one of baseball's most memorable moments when in the next game of the series, Cubs player-manager, Gabby Hartnett, hit his famous "Homer in the Gloamin'" to put the Cubs into first place. The Cubs clinched the pennant three days later. Dean pitched gamely in Game 2 of the 1938 World Series before losing to the New York Yankees in what became known as "Ol' Diz's Last Stand."  Dean made a one-game comeback on September 28, 1947. After retiring as a player, the still-popular Dean was hired as a broadcaster by the perennially cash-poor Browns to drum up some badly needed publicity. After broadcasting several poor pitching performances in a row, he grew frustrated, saying on the air, "Doggone it, I can pitch better than nine out of the ten guys on this staff!" The wives of the Browns pitchers complained, and management, needing to sell tickets somehow, took him up on his offer and had him pitch the last game of the season. At age 37, Dean pitched four innings, allowing no runs, and rapped a single in his only at-bat. Rounding first base, he pulled his hamstring. Returning to the broadcast booth at the end of the game, he said, "I said I can pitch better than nine of the ten guys on the staff, and I can. But I'm done. Talking's my game now, and I'm just glad that muscle I pulled wasn't in my throat."  In the 1950s, he appeared in guest starring roles on Faye Emerson's Wonderful Town on CBS and on The Guy Mitchell Show on ABC.

Even though he had an ailing arm was it a good pitch?
relied more on his experience and grit to defeat the Pirates by a score of 2 to 1.