Tommy John
nolan Ryan
Jesse orrosco or rickey Henderson
Nolan Ryan
Hank Aaron has hit the second most runs in the MLB history with 755 in his 23 seasons with the Milwaukee/Atlanta Braves and Milwaukee Brewers.
MLB rosters are expanded from 25 to 40 on September 1. Most of the minor leagues have finished their seasons by then or are in the playoffs and their seasons will end shortly after September 1.
Musial
Summer
For the first four seasons of his MLB career, Pete was primarily a second baseman. His career stats show 628 games played at second base.
In MLB, 240 by Justin Verlander of the Detroit Tigers.
That would have to be Hall of Famer Walter Johnson who pitched with the Senators between 1907-1927. He won 417 career games (second all time in MLB), struckout 3,508 batters (a career MLB record that lasted for 55 seasons), threw 110 shutouts (an MLB record that will not be broken in our lifetime), and pitched 531 complete games (4th all time). One little known fact about Johnson - in the 1925 season, he batted .433 going 42 for 97 with 2 HRs, 20 RBIs, and a .577 slugging average. He had a lifetime batting average of .235.
St Louis Cardinals
In MLB, that is Walter Johnson with 110 career complete game shutouts.