Answer:
Models
Step-by-step explanation:
Neal is simply using the professional pitchers as models.
Models are people with a role to showcase and promote commercial goods and services or who serves as figures to be copied.
Neal haven watched video clips of major league baseball pitchers practices pitching in his back yard, attempting to imitate the movements and style of the professional pitchers.
Also, he put into action his attentive, memory and imitation skills.