Provide context for, introduce, analyze, and cite all quotations.
Spend a little more time focusing on the game of baseball and specific players than the scientific processes. Take enthymeme (thesis) out of conclusion and put in introduction. Define performance enhancing drugs (PED). Shift real-world stuff to beginning and put scientific and theoretical stuff towards the end.
Note that Essay 1.3 will be run through TurnItIn, which will compare it to Essay 1.2. I read the reports to check for any documentation issues and to check the progress between Essay 1.2 and Essay 1.3. Remember to document your sources and revise thoroughly.