Baseball, whole: no major leaguer was born here, and the town's one drafted name is Martin Robinson

The birthplace test, run three ways: (1) Baseball-Reference's and the Lahman register's birthplace material — the standard born-here rolls — carries no Osceola, Indiana entry among its Indiana places in any form reached; the one published census of the question, Pete Cava's Indiana-Born Major League Baseball Players: A Biographical Dictionary, 1871–2014 (McFarland), counts 364 Hoosiers, and no Osceola birthplace stands among the Indiana birthplaces the record of that work returns. (2) SABR's biographical register was searched on the town's name directly: no SABR biography carries an Osceola, Indiana birth. (3) The school register — The Baseball Cube's Penn High School page, the register of every Penn alumnus who reached organized ball — was read whole: 47 alumni listed, two drafted out of the school and five draft picks in all, and exactly two major leaguers, both born in South Bend. On all three tests the headline figure is zero: no major-league baseball player was born in Osceola, Indiana — not a gap in the telling but the register's answer, printed as the finding.

The one drafted name, at exactly its strength: Martin Robinson, right-handed pitcher, born 18 June 1957 in Osceola, Indiana, Penn High School — drafted in the 1975 amateur draft, 14th round, 324th pick overall, by the Philadelphia Phillies. The Cube's line gives no college and no professional season, level or statistic: on the register's own terms he was drafted and no recorded professional appearance follows, and this article prints him at precisely that strength — the town's one drafted ballplayer, not a professional of record, and emphatically not a major leaguer. A same-name trap stands expelled: SABR's biography of Don Robinson — born Ashland, Kentucky, 8 June 1957, drafted by Pittsburgh in the same 1975 draft, a major leaguer 1978–92 — is a different man of a different state, and the two 1957-born Robinson pitchers of the 1975 draft are not merged here or anywhere in this build. Around Robinson the school register gives the boundary frame: Bill Edgerton (born South Bend, 16 August 1941; signed by the New York Mets as an undrafted free agent in 1963; major leagues 1966–69) and Niko Kavadas (born South Bend, 27 October 1998; Notre Dame; drafted by Boston 2021, 11th round, 316th pick; major leagues 2024–25, latterly with the Angels) are Penn High School's two major leaguers — formed at the township's school, born in the county seat's city, and carried in the tie register above at exactly that divided strength. The town's softball whole — Danielle Watson's College World Series and professional draft — stands in Notable People and Sports and is pointed to, not re-told: baseball, the checklist's own word, is the men's professional game, and its whole for this ground is one draft line, two boundary major leaguers, and a zero where the born-here column stands.

Sources:

1. The Baseball Cube, Penn High School (Mishawaka, IN) alumni and draft registers — 47 alumni, the draft counts, and the full lines for Martin Robinson (b. Osceola 1957; PHI, 1975, rd.
2. SABR Biographical Register and the Don Robinson biography (SABR) — the Kentucky namesake, expelled; the Osceola birthplace search on SABR, negative.
3. Pete Cava, Indiana-Born Major League Baseball Players: A Biographical Dictionary, 1871–2014 (McFarland, 2015) — the 364-name census of the question; Baseball-Reference/Lahman birthplace material as reached — no Osceola entry.
4. This build's Sports and Notable People — the Watson softball whole at pointer, as printed.