fastball vs straight

Some examples from the web:

• If he throws the same fastball every single throw what would happen?
• And Williams hurls that smokin' fastball.
• But getting beaned with a fastball,
• In another universe I might be throwing a fastball.
• - No, that was his fastball.
• A fastball, up and in, hits Uggla in the back.
• She laughed her tiny little laugh at my tiny little jokes... ...and then threw me a fastball down the middle.
• Suppose a little-league kid takes a fastball on the noggin, could that cause tau on the brain?
• No problem. Fastball here just updated me about your patient.
• Fastball, inside corner, strike 1.
• Fastball, change up, monster curve.
• We're looking for a fastball; They threw a changeup.
• I threw a fastball to Molina.
• Now try to hold my fastball.
• I think my fastball tired him out.
• Whatever you're doing tonight, if you get a fastball down the middle, just swing easy.
• Wow. Eve can throw a fastball 50 miles an hour.
• That early release - I picked up three miles an hour on my fastball.
• 'Cause I taught him how to throw a split-fingered fastball.
• MacBride gave him a good, strong fastball on the inside corner.

Some examples from the web:

• That means the bullet traveled relatively straight.
• Continue straight until you reach Pier 15.
• Jane's clients straight to you.
• I was going straight to the source.
• Roy Orbison straight after the Sun deal ended.
• Second favourite instrument, straight after the bouzouki.
• Guess we can pass unethical and skip straight to illegal.
• He went there straight from the station.
• Neal, straight ahead.Red shirt, dark jacket.
• Let me come straight to the point.
• When there's bad news... they like to hear it straight away.
• He was going to the gym straight after the office.
• Apparently, you got straight in his cab.
• Did you come straight home after?
• Right, I'm taking them straight to the lab.
• I'll have your stuff moved over straight away.
• That came straight from a district judge.
• I keep going straight, and straight...
• (BOTH LAUGHING) Okay, straight, straight, straight.
• And get your stories straight next time.