I just tried Sling TV. It was a torture. Maybe it's because it is a Saturday night. Interruptions in the video stream every few seconds. Sling must not be paying Comcast as much as Netflix and Google/YouTube does.
The pricing is $35-40/mo, once you add the Bein Sports and DVR. Not cheap. I did not get to try the DVR, and I could not click to record the entire Endurocross series. There was no such option for endurocross.
But I did get to watch a recorded Round 3. Sort of. With all the streaming interruptions I could stand watching it only about 15 minutes out of an hour.