Reinder Albertus Wolters (March 17, 1844 – January 3, 1917) was a professional baseball player from Nieuweschans, Netherlands. He played five seasons in the amateur National Association of Base Ball Players from 1866 to 1870, and three seasons in its professional successor, the National Association from 1871 to 1873. He was the first Dutch professional baseball player.^[1] While he was primarily a pitcher, he also played occasionally in the outfield.

Rynie Wolters
Pitcher / Outfielder
Born: March 17, 1844 Nieuweschans, Netherlands
Died: January 3, 1917(1917-01-03) (aged 72) Newark, New Jersey
Batted: Unknown Threw: Right
MLB debut
May 18, 1871, for the New York Mutuals
Last MLB appearance
April 28, 1873, for the Elizabeth Resolutes
MLB statistics
Win–loss record	19-23
Earned run average	3.90
Batting average	.318
Teams
National Association of Base Ball Players Irvington of Irvington, New Jersey (1866–1867) New York Mutuals (1868–1870)   National Association of Professional BBP New York Mutuals (1871) Cleveland Forest Citys (1872) Elizabeth Resolutes (1873)
Career highlights and awards
National Association RBI champion: 1871

His first and best professional season was in 1871 with the New York Mutuals, when he pitched 283 innings and had a 3.43 earned run average. His second year was with the Cleveland Forest Citys, where he played much less and had a higher ERA. In his last year, he only pitched one game, with the Elizabeth Resolutes. He completed it, giving up 23 runs, but none were earned. Wolters died in Newark, New Jersey, at the age of 72.