Does RankMath pull microdata with custom schema generator?

Example:
This is an example of Microdata for schema – sportsteam.

<div itemscope itemtype="https://schema.org/SportsTeam">
    <span itemprop="name">San Francisco 49ers</span>
    <div itemprop="member" itemscope itemtype="https://schema.org/OrganizationRole">
        <div itemprop="member" itemscope itemtype="https://schema.org/Person">
            <span itemprop="name">Joe Montana</span>
        </div>
        <span itemprop="startDate">1979</span>
        <span itemprop="endDate">1992</span>
        <span itemprop="roleName">Quarterback</span>
    </div>
</div>

This is from https://www.baseball-reference.com/players/s/swansda01.shtml

<div itemscope itemtype="https://schema.org/BreadcrumbList" class="crumbs"><span itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem"><a itemprop="item" href="/"><span itemprop="name">BR Home Page</span></a> <meta itemprop="position" content="1" /></span> > <span itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem"><a itemprop="item" href="/players/"><span itemprop="name">MLB Players</span></a> <meta itemprop="position" content="2" /></span> > <span itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem"><a itemprop="item" href="/players/s/"><span itemprop="name">S Listing</span></a> <meta itemprop="position" content="3" /></span> > <strong>Dansby Swanson Statistics and History</strong></div></div>

When I do a ctrl+f search, there are 9 hits on the word. When I do a URL search at https://www.baseball-reference.com/players/s/swansda01.shtml with the RankMath custom generator, I get no results.