"There are 9 fielding positions in baseball. Each position conventionally has an associated number, which is used to score putouts: 1 (pitcher), 2 (catcher), 3 (first baseman), 4 (second baseman), 5 (third baseman), 6 (shortstop), 7 (left fielder), 8 (center fielder), and 9 (right fielder)." [Baseball positions. Wikipedia]
The baseball positions diagram example "Baseball - Defensive fly ball" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Baseball solution from the Sport area of ConceptDraw Solution Park.