I just want to make sure these sentences begin with subordinating conjunctions:

Although there are a lot of concerned players, some haven't made the right choices.
When I was young, I remember a time when the sports world was honest, and drug-free.
As long as it's been, I bet I can still hit it across that fence in your back yard.

this was from 12 years ago wtf

Although...

When ...

As long as ...

Yes, they all start with subordinating conjunctions.

Sure! Here are the sentences with the subordinating conjunctions highlighted:

1. Although there are a lot of concerned players, some haven't made the right choices.
The subordinating conjunction in this sentence is "Although," which introduces a subordinate clause that presents a contrast to the main clause.

2. When I was young, I remember a time when the sports world was honest, and drug-free.
The subordinating conjunction in this sentence is "When," which introduces a subordinate clause that describes a specific time in the past.

3. As long as it's been, I bet I can still hit it across that fence in your backyard.
The subordinating conjunction in this sentence is "As long as," which introduces a subordinate clause that sets a condition for the main clause.

To identify subordinating conjunctions in a sentence, you can look for words that introduce dependent or subordinate clauses and link them to the main clause. Some common subordinating conjunctions include "although," "when," "as long as," "while," "if," "because," and "since," among others.