Axis Customize
The Sparkline axis can be collapsed using visible property in [axisLineSetting] and this not applicable for win-loss. You can customize [color], [width] and [dash array] of axis line.
<ej-sparkline id="sparklinecontainer" size.width="170px" [axisLineSettings.visible]="true" axisLineSettings.color="#ff14ae">
</ej-sparkline>