As the OP didn't say he was talking about college, NCAA rules citations aren't relevant here.
In the rule sets I'm familiar with (ASA, USSSA), the only allowance for a fielder being in the path of the runner is when they're fielding a batted ball. If a fielder is otherwise in the base path without the ball, and their presence impedes the runner, it's obstruction. That said, you can't just plow over a fielder, and malicious contact can result in ejection, but there's nothing wrong with a "bump" while going around.
In the rule sets I'm familiar with (ASA, USSSA), the only allowance for a fielder being in the path of the runner is when they're fielding a batted ball. If a fielder is otherwise in the base path without the ball, and their presence impedes the runner, it's obstruction. That said, you can't just plow over a fielder, and malicious contact can result in ejection, but there's nothing wrong with a "bump" while going around.
