Good hit?

I'm assuming the 8 ball is legal and the shooter didn't want to double hit the cue ball. I couldn't see a double hit with the cue so I think it was legal. I can't 100% say a double hit didn't happen, but I am below the threshold to call a foul.

I've typically found the best way for me to shoot when the object ball and cue ball are close together is to hold the cue stationary and quickly tighten my grip. It actually works better than you'd expect.
 
Looked good to me. It’s a jump shot. So the cueball is able to go forward some. The trajectory of the cueball goes upward off the vertical tangent line. There’s enough space between the balls where the trajectory it took was feasible for a good hit and that’s supported by the height it went. I think a double hit would more likely send the cueball further forward than it did.
 
Looked good to me. It’s a jump shot. So the cueball is able to go forward some. The trajectory of the cueball goes upward off the vertical tangent line. There’s enough space between the balls where the trajectory it took was feasible for a good hit and that’s supported by the height it went. I think a double hit would more likely send the cueball further forward than it did.
yes, just like a draw shot, it goes forward some before coming back unless it is a double hit, which I didn't see
 
Thanks for the comments, I’m the actually shooter of this shot.

To avoid a double touch……

- I used my jump cue.
- stroked at about 45 degrees
- pulled back quickly to avoid the cue ball.

I called the shot legal on myself before watching the video because I didn’t feel that distinctive 2nd vibration/rub from a double tap.
 
This is the point of impact between the balls. The cb should follow the tangent, meaning it should go in the direction of the white arrow, which it first does, but then it changes to a more forward direction as soon as the ob moves out of the way.

What happens is the cb doesn't have time to escape. As a result, the top side of the tip/ferrule hits the cb again. It ends up following the path shown in red, which can only happen if another force pushed/hit it in that direction. Had it gone straight along that white arrow path a little longer before arcing forward and dropping back down, it would've proven that the tip didn't affect the cb path. But this cb changes directions while it looks to be riding or getting hit again by the tip.

This is easy to judge with a slow motion video, but in person it's usually too iffy to be 100% certain of a foul. If I saw this shot in person, I'd likely call it good. But, when looking at the video, it's an obvious foul.
 

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The ball has a good half inch to get airborne which it does. The tangent is indeed angled forward.

Yep, but the cb happens to change to a more forward direction while the tip is on the ball, or looks to be touching the ball. That wouldn't be noticed so much in real time, but it shows up on slowmo video.

I'd call it good in person if I watched someone play it, or if I played it. Thankfully we don't use instant replay utilizing slow motion video to determine such fouls.
 
This is the point of impact between the balls. The cb should follow the tangent, meaning it should go in the direction of the white arrow, which it first does, but then it changes to a more forward direction as soon as the ob moves out of the way.

What happens is the cb doesn't have time to escape. As a result, the top side of the tip/ferrule hits the cb again. It ends up following the path shown in red, which can only happen if another force pushed/hit it in that direction. Had it gone straight along that white arrow path a little longer before arcing forward and dropping back down, it would've proven that the tip didn't affect the cb path. But this cb changes directions while it looks to be riding or getting hit again by the tip.

This is easy to judge with a slow motion video, but in person it's usually too iffy to be 100% certain of a foul. If I saw this shot in person, I'd likely call it good. But, when looking at the video, it's an obvious foul.
The cue ball does NOT go to the right after contact, it goes straight forward in the OP video.
Showing the cb going to the right after object ball contact, I did NOT see in post #1 video link
 
The ball moves forward by cue displacement. There is no secondary contact. The backspin seems to create the illusion of a vertical carom but in continuous motion the ball simply continues along the tangent.

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Yep, but the cb happens to change to a more forward direction while the tip is on the ball, or looks to be touching the ball. That wouldn't be noticed so much in real time, but it shows up on slowmo video.

I'd call it good in person if I watched someone play it, or if I played it. Thankfully we don't use instant replay utilizing slow motion video to determine such fouls.
I’ve been debating in my head if some of that trajectory change is the orientation of the camera. It’s a more oblique view, not a lateral view. The ball follows a parabolic path where the camera is mostly aligned for the ball to come toward the camera on its ascent. I think from that perspective it should look like a trajectory change as gravity starts slowing the ascent.
 
I’ve been debating in my head if some of that trajectory change is the orientation of the camera. It’s a more oblique view, not a lateral view. The ball follows a parabolic path where the camera is mostly aligned for the ball to come toward the camera on its ascent. I think from that perspective it should look like a trajectory change as gravity starts slowing the ascent.
Yes, the normal parabolic path of the cue ball can explain the more forward motion that BC21 is worried about, but the shot looked really close to a foul.

The camera angle is bad. We can not say how many millimeters of clearance there was between ferrule and ball in the tenth of a second after tip-ball contact. Maybe it was 5mm, maybe it was 0. A better angle would have been from the side.

In looking at the shot in looped replay, it looks good, but it would be very hard to be sure live. Uncertain call goes to the shooter. Here is a video of that looped replay:

 
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